answer: Aaron Johnson calls Room Reservations to reserve a twin room at the Guangzhou xx Hotel from April 16th to 20th for 5 nights for his wife and himself. At #Person1#'s suggestion, Mr. Johnson makes a guaranteed reservation by credit card so they can hold the room overnight for him.
documents: #Person1#: R :: Good morning. Room Reservations. May I help you?
  #Person2#: Yes, I'd like to reserve a room.
  #Person1#: R :: Thank you, sir. For which date and how many guests will there be in your party?
  #Person2#: From April 16th to 20th. Just my wife and myself.
  #Person1#: R :: From April 16th to 20th. And which kind of room would you prefer, sir?
  #Person2#: A Twin, please.
  #Person1#: Could you hold the line please? I'll check our room availability. ( After a while ) Thank you for waiting, sir. We have a twin room at US $ 180 per night, will that be all right?
  #Person2#: Ok, I'll take it.
  #Person1#: Thank you, sir. May I have your name and phone number, please?
  #Person2#: Sure. May name is Aaron Johnson, and my phone number is 3242-5827.
  #Person1#: R :: Mr. Aaron Johnson, phone number is 3242-5827. Excuse me, how do you spell your first name?
  #Person2#: It's double A, R, O, N.
  #Person1#: Double A, R, O, N. Thank you, Mr. Johnson. May I know your arrival time on April 16th?
  #Person2#: Around 9 p. m.
  #Person1#: Mr. Johnson, for the unguaranteed reservation, we can only hold the room by 6 p. m. , because it is the peak season now. If you make a guaranteed reservation, we can hold the room overnight. Would you like to make a guaranteed reservation by credit card?
  #Person2#: Fine. Do you accept American Express?
  #Person1#: Yes. May I know the number?
  #Person2#: It's 134986
  #Person1#: Thank you, Mr. Johnson. You'Ve made a guaranteed reservation at the Guangzhou xx Hotel, from April 16th to 20th for 5 nights. If you can't arrive as schedule, please inform us before 6 p. m. on April. hank you for calling and we look forward to serving you