You want to invoke one service that is invoking other services in some flow? Is that what you want? If so check out proxy service concept.
Consider using service bus (ALSB) where you can set proxy service the easy way. Its only one service you want make proxy?
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: Having a single URL to process multiple WSDL services