Hello.
user
Hello, how can I help you today?
assistant
Can you please change my existing reservation, due to my trip with friends has been postponed?
user
Sure, I am glad to help you. May I know your name please?
assistant
My name is Donald Hill.
user
Ok, please standby.
assistant
Sure.
user
Sorry to say that, no reservation was found on your name to change.
assistant
Ok, thanks for your information.
user
Thank you for choosing us.
assistant