You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Stephen Allen. My business meeting has been postponed. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure, just a moment please. I am sorry no reservation found on your name.

USER: Sure, take your time. Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.