answer: #Person2# tells Mr. Chen that the flight to Tokyo is all booked up.
documents: #Person1#: Would you find any other available flight to Tokyo?
  #Person2#: Sure. We try our best.
  #Person1#: Thank you.
  #Person2#: Mr. Chen, are you sure you're taking BA - 007 back to Tokyo?
  #Person1#: Yes, of course. I think our travel agent would have made the reservation for us.
  #Person2#: I'm afraid this flight is all booked up.
  #Person1#: Are you sure? We can't really take it? I reconfirmed with Miss Peterson the other day.
  #Person2#: I'm afraid so except we have many no-show passengers.