answer: Deng Li calls #Person1# to reconfirm the flight reservation of a first-class ticket. #Person1# finds that Deng Li is flying in economy class, so #Person1# helps make the first-class ticket in order.
documents: #Person1#: Hello! This is Air China Booking Office.
  #Person2#: Hello! I'd like to reconfirm my flight reservation.
  #Person1#: May I know your flight number, please?
  #Person2#: It's flight CA169, which leaves Beijing at 8: 00 a. m. on January 20th.
  #Person1#: Oh, yes. That's our regular flight to Nanchang. Would you please tell me your name?
  #Person2#: My name is Deng Li.
  #Person1#: Yes, here you are. You're flying in economy class. Is that right?
  #Person2#: Oh, no. I'm sure I made a reservation for a first-class ticket.
  #Person1#: Let me check. Now, your ticket is in order. Thank you for calling to reconfirm.
  #Person2#: That's what I should do. And I don't want to lose it.
  #Person1#: Quite right. If you don't confirm, the reservation will be cancelled 72 hours before the departure time. In order not to miss your flight, I think you should pick up your ticket as early as possible.
  #Person2#: OK! I shall.