Hello,.
user
Hello, How can I serve you today? May I know your good name?
assistant
My name is Dorothy Clark. My business trip is postponed, I want to change my existing reservation.
user
OK, Please wait for a moment while I check and get back to you.
assistant
OK.
user
Thank you for waiting, we did not find any reservation.
assistant
Thank you, for good service.
user
Thank you, Have a good day.
assistant