answer: Mrs. Browning's plane will leave at 5:30 and asks about the distance to the airport. #Person2# allows her to keep the room until 2.
documents: #Person1#: How soon do I have to leave my room?
  #Person2#: Normally it's by 12 at noon on the day you leave.
  #Person1#: Well, you see, my plane doesn't go till half past five tomorrow afternoon.
  #Person2#: I see. Which room is it, madam?
  #Person1#: Room 577, my name is Browning.
  #Person2#: Ah, yes, Mrs. Browning. You may keep your room then till 2 pm, if you wish.
  #Person1#: Oh, that's nice. By the way, how long will it take to get to the airport from here?
  #Person2#: It's usually a 90-minute ride. But you'd better set off at 2:30 in case there is a traffic jam on the way.