1. A method in a data processing system for extending Web services to include call flow interactions, the method comprising: receiving a description language document that describes one or more Web services interface components; associating a Web services interface component within the one or more Web services interface components with one or more call flow segments; inserting a call flow binding into the description language document to form an extended description language document, wherein the call flow binding associates an interaction operation with a binding point in a given call flow segment within the one or more call flow segments; and executing a converged application based on the extended description language document.