Hello.
user
Hello. How can I help you?
assistant
Due to some client meeting, I am willing to change my reservation. Can you please help me for this?
user
Sure. may I know your name please?
assistant
Myself Robert Hall.
user
I am sorry no reservation found on your name.
assistant
Not a big deal, anyhow thank you very much for your service.
user
Thank you for choosing us.
assistant