diff --git a/src/BusProNet/ResponseParser.php b/src/BusProNet/ResponseParser.php
index cce227d..22f192b 100644
--- a/src/BusProNet/ResponseParser.php
+++ b/src/BusProNet/ResponseParser.php
@@ -35,14 +35,14 @@ class ResponseParser
         $responseType = $type;
         $responseTypeXml = $xml->xpath('satz/@typ');
         if (0 < count($responseTypeXml)) {
-            $responseType = (string)$xml->xpath('satz/@typ')[0];
+            $responseType = (string) $xml->xpath('satz/@typ')[0];
         }
 
         switch ($responseType) {
             case ApiClient::TYPE_NOTIFICATION:
                 return $this->createNotificationResponse($xml);
             case ApiClient::TYPE_CUSTOMER_DATA:
-                $subType = (string) $xml->xpath('art')[0];
+                $subType = (string) $xml->art;
                 switch ($subType) {
                     case 'Adressdaten':
                     case 'Adressdaten_Ändern':
@@ -65,27 +65,31 @@ class ResponseParser
 
     public function createNotificationResponse(\SimpleXMLElement $xml): NotificationResponse
     {
-        $code = (int) $xml->xpath('satz/nr')[0];
-        $message = (string) $xml->xpath('satz/text')[0];
+        $recordXml = $xml->satz;
+
+        $code = (int) $recordXml->nr;
+        $message = (string) $recordXml->text;
 
         return new NotificationResponse($code, $message);
     }
 
     public function createProfileResponse(\SimpleXMLElement $xml): ProfileResponse
     {
-        $addressId = (int) $xml->xpath('idadresse')[0];
-        $personId = (int) $xml->xpath('idperson')[0];
+        $addressId = (int) $xml->idadresse;
+        $personId = (int) $xml->idperson;
 
-        $lastName = (string) $xml->xpath('adressdaten/name')[0];
-        $firstName = (string) $xml->xpath('adressdaten/vorname')[0];
-        $salutation = (string) $xml->xpath('adressdaten/anrede')[0];
-        $title = (string) $xml->xpath('adressdaten/titel')[0];
+        $addressXml = $xml->adressdaten;
 
-        $gender = (string) $xml->xpath('adressdaten/geschlecht')[0];
+        $lastName = (string) $addressXml->name;
+        $firstName = (string) $addressXml->vorname;
+        $salutation = (string) $addressXml->anrede;
+        $title = (string) $addressXml->titel;
+
+        $gender = (string) $addressXml->geschlecht;
         $gender = strtoupper($gender) === 'W' ? 'F' : strtoupper($gender);
 
-        $date = $xml->xpath('adressdaten/geburtsdatum');
-        $dateOfBirth = $date ?\DateTimeImmutable::createFromFormat('d.m.Y', (string) $date[0]) : null;
+        $dateString = (string) $addressXml->geburtsdatum;
+        $dateOfBirth = empty($dateString) ? null : \DateTimeImmutable::createFromFormat('d.m.Y', $dateString);
 
         $response = new ProfileResponse();
         $response
@@ -99,30 +103,34 @@ class ResponseParser
             ->setDateOfBirth($dateOfBirth)
         ;
 
-        $postalAddressStreet = $xml->xpath('adressdaten/anschrift/strasse');
-        $postalAddressPostcode = $xml->xpath('adressdaten/anschrift/plz');
-        $postalAddressCity = $xml->xpath('adressdaten/anschrift/ort');
-        $postalAddressCountry = $xml->xpath('adressdaten/anschrift/land');
+        $postalXml = $addressXml->anschrift;
+
+        $postalAddressStreet = (string) $postalXml->strasse;
+        $postalAddressPostcode = (string) $postalXml->plz;
+        $postalAddressCity = (string) $postalXml->ort;
+        $postalAddressCountry = (string) $postalXml->land;
 
         $address = new Address();
         $address
-            ->setStreet($postalAddressStreet ? (string) $postalAddressStreet[0] : null)
-            ->setPostCode($postalAddressPostcode ? (string) $postalAddressPostcode[0] : null)
-            ->setCity($postalAddressCity ? (string) $postalAddressCity[0] : null)
-            ->setCountry($postalAddressCountry ? (string) $postalAddressCountry[0] : null)
+            ->setStreet($postalAddressStreet)
+            ->setPostCode($postalAddressPostcode)
+            ->setCity($postalAddressCity)
+            ->setCountry($postalAddressCountry)
         ;
 
         $response->setAddress($address);
 
-        $phone = $xml->xpath('adressdaten/kommunikation/telefonprivat');
-        $mobile = $xml->xpath('adressdaten/kommunikation/telefonmobil');
-        $email = $xml->xpath('adressdaten/kommunikation/email');
+        $contactXml = $addressXml->kommunikation;
+
+        $phone = (string) $contactXml->telefonprivat;
+        $mobile = (string) $contactXml->telefonmobil;
+        $email = (string) $contactXml->email;
 
         $communication = new Communication();
         $communication
-            ->setPhone($phone ? (string) $phone[0] : null)
-            ->setMobile($mobile ? (string) $mobile[0] : null)
-            ->setEmail($email ? (string) $email[0] : null)
+            ->setPhone($phone)
+            ->setMobile($mobile)
+            ->setEmail($email)
         ;
 
         $response->setCommunication($communication);
@@ -136,15 +144,16 @@ class ResponseParser
         $isAdmin = $isManager = $isHouseManager = $isTeamer = false;
         $hotelCode = null;
 
-        foreach ($xml->xpath('selektionsmerkmale/selektionsgruppe') as $item) {
+        foreach ($xml->selektionsmerkmale->selektionsgruppe as $item) {
             $group = new CrmAttributeGroup();
             $group->setLabel($item->attributes()['bezeichnung']);
             $attributes = [];
 
-            foreach ($item->xpath('selektion') as $subItem) {
-                $attributeId = (int) $subItem->attributes()['id'];
-                $attributeLabel = (string) $subItem->attributes()['bezeichnung'];
-                $attributeSelected = 'True' === (string) $subItem->attributes()['auswahl'];
+            foreach ($item->selektion as $subItem) {
+                $subItemAttributes = $subItem->attributes();
+                $attributeId = (int) $subItemAttributes['id'];
+                $attributeLabel = (string) $subItemAttributes['bezeichnung'];
+                $attributeSelected = 'True' === (string) $subItemAttributes['auswahl'];
                 $attribute = new CrmAttribute();
                 $attribute
                     ->setId($attributeId)
@@ -194,14 +203,15 @@ class ResponseParser
     {
         $countries = [];
 
-        foreach ($xml->xpath('laender/land') as $item) {
-            $token = (string) $item->attributes()['kuerzel'];
+        foreach ($xml->laender->land as $item) {
+            $itemAttributes = $item->attributes();
+            $token = (string) $itemAttributes['kuerzel'];
             $country = new Country();
             $country
-                ->setId((int) $item->attributes()['id'])
-                ->setName((string) $item->attributes()['bezeichnung'])
-                ->setToken((string) $item->attributes()['kuerzel'])
-                ->setNationality((string) $item->attributes()['nationalitaet'])
+                ->setId((int) $itemAttributes['id'])
+                ->setName((string) $itemAttributes['bezeichnung'])
+                ->setToken((string) $itemAttributes['kuerzel'])
+                ->setNationality((string) $itemAttributes['nationalitaet'])
             ;
             $countries[$token] = $country;
         }
@@ -213,16 +223,17 @@ class ResponseParser
     {
         $pickups = [];
 
-        foreach ($xml->xpath('zustieg') as $item) {
-            $id = (int) $item->attributes()['id'];
-            $busProId = (int) $item->attributes()['idbuspro'];
+        foreach ($xml->zustieg as $item) {
+            $itemAttributes = $item->attributes();
+            $id = (int) $itemAttributes['id'];
+            $busProId = (int) $itemAttributes['idbuspro'];
             $pickup = new Pickup();
             $pickup
                 ->setId($id)
                 ->setBusProId($busProId)
-                ->setCode((string) $item->attributes()['code'])
-                ->setCity($item->xpath('ort') ? (string) $item->xpath('ort')[0] : null)
-                ->setStreet($item->xpath('strasse') ? (string) $item->xpath('strasse')[0] : '')
+                ->setCode((string) $itemAttributes['code'])
+                ->setCity((string) $item->ort)
+                ->setStreet((string) $item->strasse)
             ;
             $pickups[$busProId] = $pickup;
         }
@@ -234,20 +245,21 @@ class ResponseParser
     {
         $hotels = [];
 
-        foreach ($xml->xpath('hotel') as $item) {
-            $id = (int) $item->attributes()['id'];
-            $busProId = (int) $item->attributes()['idbuspro'];
+        foreach ($xml->hotel as $item) {
+            $itemAttributes = $item->attributes();
+            $id = (int) $itemAttributes['id'];
+            $busProId = (int) $itemAttributes['idbuspro'];
             $hotel = new Hotel();
             $hotel
                 ->setId($id)
                 ->setBusProId($busProId)
-                ->setCode((string) $item->attributes()['code'])
-                ->setName($item->xpath('name') ? (string) $item->xpath('name')[0] : null)
-                ->setCountry($item->xpath('land') ? strtolower((string) $item->xpath('land')[0]) : null)
-                ->setCity($item->xpath('ort') ? (string) $item->xpath('ort')[0] : null)
-                ->setStreet($item->xpath('strasse') ? (string) $item->xpath('strasse')[0] : null)
-                ->setPhone($item->xpath('telefon') ? (string) $item->xpath('telefon')[0] : null)
-                ->setType($item->xpath('art') ? (string) $item->xpath('art')[0] : null)
+                ->setCode((string) $itemAttributes['code'])
+                ->setName((string) $item->name)
+                ->setCountry(strtolower((string) $item->land))
+                ->setCity((string) $item->ort)
+                ->setStreet((string) $item->strasse)
+                ->setPhone((string) $item->telefon)
+                ->setType((string) $item->art)
             ;
             $hotels[$busProId] = $hotel;
         }