Dana is introduced as seeming nice to Claire and giving her trashy magazines, caramel truffles and a fluffy neck pillow. But during the flight, she is revealed to be an obnoxious bigot and she constantly annoys Claire and somehow tries to embarrass her. When Phil hears about this, he lies to not need to switch seats and enjoy his time getting back rubs and seeing card tricks.
Later, after Phil and Claire's fight, Phil accepts to sit next to Dana and let Claire sit in his seat. Phil sends her off to his seat for peace and quiet while he deals with Dana.