You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Patrick Williams here. I would like to cancel my reservation as my meeting as has been cancelled, can you please help me with that?

ASSISTANT: Sure Patrick, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Patrick, there is no reservation found as per your name to cancel it.

USER: That's ok, no problem. It might not booked properly. Anyway thank you for checking out.

ASSISTANT: You are welcome.