answer: #Person1# assists #Person2# to check three pieces of luggage. #Person2# has to pay 250 yuan for excess baggage.
documents: #Person1#: How many pieces of luggage do you want to check, sir?
  #Person2#: I want to check these three pieces and I'll carry this carry-on bag with me on board.
  #Person1#: Ok. Is this your luggage properly labelled, sir?
  #Person2#: Yes, it is.
  #Person1#: Ok. Would you please put all your luggage on the scales?
  #Person2#: Sure. How about this carry-on bag?
  #Person1#: Hand-baggage is not to be weighed, sir. . . I'm sorry, sir, you're 25 kilos overweight. I'm afraid there'll be an excess luggage charge, sir.
  #Person2#: How much should I pay for the excess weight?
  #Person1#: Ten yuan for each kilogram. You'll have to pay 250 yuan for the excess baggage.