Due to fly ORD-ATL and back next month. Due to work, have to go elsewhere so won't be taking the outbound part of the journey (have to go to MCO on Ted, Raaaaaa!) I assume I am still ok if I just use the return to ORD part of the ticket? Or will I get there and find that DL direct me to a slightly shifty looking man under a stained banner that reads 'US Airways' ?