[speaker001:] Good afternoon, need any help?
[speaker002:] My name is Liu Wei. I have booked a ticket to Boston three days before.
[speaker001:] That's right and your flight number is CA621.
[speaker002:] But now I want to make a change. Please cancel this flight and transfer me to flight GB105.
[speaker001:] Excuse me, sir. Flight GB105 is one to Milan, are you sure of your change?
[speaker002:] Yes.