Using LINQ to XML to Parse a SOAP message

I am getting up to speed in Linq to XML in C# and attempting to parse the following message and don't seem to be making much progress. Here is the soap message I am not sure if I perhaps I need to use a namespace. Here is the SOAP message I am trying to format. Any help would be greatly appreciated. I am attempting to extract the values. Thanks.

<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
 <soap:Body>
  <Lookup xmlns="http://ASR-RT/">
   <objIn>
    <transactionHeaderData>
     <intWebsiteId>1000</intWebsiteId>
     <strVendorData>test</strVendorData>
     <strVendorId>I07</strVendorId>
    </transactionHeaderData>
    <intCCN>17090769</intCCN>
    <strSurveyResponseFlag>Y</strSurveyResponseFlag>
   </objIn>
  </CCNLookup>
 </soap:Body>
</soap:Envelope>