Sending: <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:req="http://hilton.propertytip.com/">
   <soapenv:Header>
      <req:Interface Version="4.0">
         <req:PayloadInfo RequestId="1" RequestorId="chrislwade" ResponderId="Hilton">
            <req:CommDescriptor DestinationId="HiltonTxnEngine" SourceId="ota-test">
               <req:Authentication Password="HTE-TESTQ" Username="HTE-TESTQ"/>
            </req:CommDescriptor>
            <req:PayloadDescriptor Name="OTA_HotelAvailRQ" Version="2010A"/>
         </req:PayloadInfo>
      </req:Interface>
   </soapenv:Header>
   <soapenv:Body>
       <OTA_HotelAvailRQ xmlns="http://www.opentravel.org/OTA/2003/05" xmlns:ns2="http://hilton.propertytip.com/" xmlns:ns3="http://hilton.propertytip.com/ResponseHeader" xmlns:ns4="http://hilton.propertytip.com/RequestHeader" Version="4.0">
   <AvailRequestSegments>
      <AvailRequestSegment>
         <StayDateRange Duration="P1D" Start="2014-12-12"/>
         <RatePlanCandidates>
            <RatePlanCandidate RatePlanCategory="TOKEN" RatePlanCode="HC"/>
            <RatePlanCandidate RatePlanCategory="BAR" RatePlanCode="LV3"/>
         </RatePlanCandidates>
         <RoomStayCandidates>
            <RoomStayCandidate Quantity="1">
               <GuestCounts IsPerRoom="true">
                 <GuestCount AgeQualifyingCode="10" Count="1"/>
               </GuestCounts>
            </RoomStayCandidate>
         </RoomStayCandidates>
         <HotelSearchCriteria>
            <Criterion>
               <HotelRef HotelCode="DFWLT"/>
            </Criterion>
         </HotelSearchCriteria>
         <TPA_Extensions>
            <RedemptionUpgrade GNRNumber="469542507" SegID="1"/>
         </TPA_Extensions>
      </AvailRequestSegment>
   </AvailRequestSegments>
</OTA_HotelAvailRQ>
   </soapenv:Body>
</soapenv:Envelope>

Response: <?xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
  <SOAP-ENV:Header>
    <Interface xmlns="http://www.hilton.com/ota/header" Name="HiltonTransactionExchange" Version="4.0">
      <PayloadInfo RequestId="1" RequestorId="Hilton" ResponderId="chrislwade">
        <CommDescriptor DestinationId="chrislwade" SourceId="HiltonTransactionExchange"/>
        <Authentication/>
        <Session SessionId="1418318195.43808-13150-dev"/>
        <PayloadDescriptor Version="4.0" Name="Document"/>
      </PayloadInfo>
    </Interface>
  </SOAP-ENV:Header>
  <SOAP-ENV:Body>
    <OTA_HotelAvailRS xmlns="http://www.opentravel.org/OTA/2003/05" TimeStamp="2014-12-11T11:16:35.43-06:00" Target="Production" Version="4.0" PrimaryLangID="en-us">
      <Success/>
      <Warnings>
        <Warning Type="3">DFWLT: REQUESTED RATE PLANS ARE NOT AVAILABLE</Warning>
      </Warnings>
      <Criteria>
        <Criterion>
          <HotelRef HotelCode="DFWLT"/>
          <TPA_Extensions>
            <PreSellFlag>N</PreSellFlag>
          </TPA_Extensions>
        </Criterion>
      </Criteria>
    </OTA_HotelAvailRS>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>