How to use SSIS to retrieve XML responses from a Web Service?

Hi,

We are using SSIS 2012 to call a webservice whose responses are returned in XML format.  I tried using the WebService transform but am prompted to provide a WSDL file which is not given to us.  That is, a WSDL is not needed to access the web service.  Is there a different transform (Script Task?) that should be used instead?  If so, can you provide me with some guidance on handling the webservice request and the XML response via the Script task?

Thanks much for your help and guidance.