answer: #Person1# is assisting #Person2# in booking round-trip flight tickets to London.
documents: #Person1#: What date would you like to depart, sir?
  #Person2#: Do you have any seats for September 16th?
  #Person1#: Let's see... I'm afraid the 16th is fully booked. But I have seats for the 17th.
  #Person2#: The 17th will be fine.
  #Person1#: And what date will you be returning?
  #Person2#: Hmm, I guess on the 28th.
  #Person1#: Okay, you ' re booked on American Airlines flight 710, departing JFK at 6:40 p. m. on September 17th. Your return flight is flight 711, departing London ' s Heathrow Airport at 11:15 a. m. on September 28th.
  #Person2#: Sounds good. Thanks a lot.