Travel Booking Application using WF
If you have been looking for a good complete example on how WF can be used to build your application,
Check out
http://www.windowsworkflow.net/Modules/MoreArticles.aspx?tabindex=0&mid=64
"This sample shows a Windows Form application that simulates a travel booking scenario. The majority of the logic associated with the form is provided by a workflow. In this example, the Windows Form serves as the host process for the workflow runtime as well as the implementation of the interface that the HandleExternalEvent and CallExternalMethod activities in the workflow are authored against..... "