An interface design tool may include a traditional call flow design view and a traditional WSDL interface design view. The call flow design view may allow for the grouping of the call flow into segments or exchanges, and allow for labeling of each message in the segment. The tooling then allows for the creation of a mapping between WSDL operations and the call flow. The mapping may be labeled with the interaction type. The output of the visual artifacts may then be a WSDL and call flow XML document, where the additional bindings are included for the operations that capture the interaction relationships.