Hello, I am Dennis Mitchell.
user
Hello,Mitchell. How shall I guide you?
assistant
My business meeting has been postponed, so I want to change my existing reservation. Can you guide me for changing an reservation?
user
Definitely,let me check.
assistant
Sure.
user
Sorry,no reservation has found on your name.
assistant
Ok, no problem. Thanks for your service.
user
Thank you for approaching us.
assistant