[<reference> exchange token confirmation]-> [<input> menu option]
[menu option]-> [<choice> 1.Confirm]
[1.Confirm]-> yes [Process exchange request *(celery tasks)]
[Process exchange request *(celery tasks)]-> [<reference> complete]
[1.Confirm]-> no [<choice> 2. Cancel]
[2. Cancel]-> yes [<reference> start menu]
[2. Cancel]-> no [<reference> exit invalid menu option]