HTTP + SOAP12
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /soap12 HTTP/1.1 
Host: content.pbsdealers.com 
Content-Type: text/xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
    <soap12:Body>
<AppointmentConfirmationClick xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/PBS.AristoServices">
  <AppointmentDateTime>0001-01-01T00:00:00</AppointmentDateTime>
  <AppointmentRef>00000000-0000-0000-0000-000000000000</AppointmentRef>
  <ContactName>String</ContactName>
  <DealershipName>String</DealershipName>
  <SerialNumber>String</SerialNumber>
  <VehicleInformation>String</VehicleInformation>
</AppointmentConfirmationClick>
    </soap12:Body>
</soap12:Envelope>