Hi. I am David Davis.
user
Hello, how can I help you?
assistant
I would like to change my existing reservation due to the sudden postpone of my business meeting. Can you please help me in this?
user
Sure, please wait a minute.
assistant
Ok.
user
Sorry, to inform you that there is no reservation found with your name.
assistant
Not a problem, thank you.
user
Thank you for reaching us.
assistant