You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, can you help me in this?

ASSISTANT: Sure, may I know your name?

USER: Myself Raymond Rodriguez.

ASSISTANT: Sorry Raymond, no reservation found on your name, I think your previous reservation is not confirmed before.

USER: That's ok, no issue.

ASSISTANT: Thank you for contacting  us.

USER: Welcome.