Hello, my name is Christopher Edwards.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation due to postpone of my meeting.
user
Ok, please wait for a minute, let me check and get back to you.
assistant
Ok.
user
Thank you for waiting. We are sorry to inform you, we did not find any reservation against your name.
assistant
Ok, thanks for your service.
user
Thank you for choosing us. Have a nice day.
assistant