Me: I would like to cancel the last leg of our flight, and get off at Phoenix
Airline rep: No problem Sir. It'll cost you $400 a ticket.
Me: I am not sure I explained myself well, all I want is to not take the last flight. Surely not flying can’t cost more than taking the flight. After all, you can resell the tickets.
Rep: Sir, this is our policy. If you don’t fly we’ll have to deduct the charge from your credit card.