Hello, I am Dennis Thompson.
user
Hello. How may I assist you?
assistant
Due to a sudden meeting at office with my client, on my boarding day, I want to cancel my recent reservation. Can you please help me in that?
user
Sure, please wait a moment.
assistant
Sure.
user
Sorry, there is no active reservation on  your name.
assistant
That's ok, not a problem. Thanks for your information.
user
Thank you for choosing us.
assistant