Hello.
user
Hello. How may I help you?
assistant
I want to cancel my reservation, can you help me in this?
user
Sure, may I know your name?
assistant
Myself Raymond Rodriguez.
user
Sorry Raymond, no reservation found on your name, I think your previous reservation is not confirmed before.
assistant
That's ok, no issue.
user
Thank you for contacting  us.
assistant
Welcome.
user