[<reference> send enter recipient]-> [<input> Enter phone number]
[Enter phone number]-> [<choice> is user]
[is user]-> yes [save recipient phone number]
[save recipient phone number]-> [<reference> send token amount]
[is user]-> no [<choice> is token agent]
[is token agent]-> yes [<reference> exit use exchange menu]
[is token agent]-> no [<reference> exit invalid recipient]