A: Can I help you?
B: Yes. Could you tell me where I can refund this ticket?
A: Please go to Window 9 for refunding.
B: Thank you.
C: Very glad to serve you.
B: I'd like to refund this ticket.
C: Please produce relevant documents.
B: Here you are. Do I need to pay extra money?
C: Yes. We charge two dollars as the handling fee.
B: Here is ten dollars.
C: Do you need to buy another ticket?
B: No, thank you.
C: OK, please wait a minute. Here are your money and documents. Wish you a happy day. Goodbye.
B: Goodbye.