You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Paul Collins. I just want to cancel my flight ticket, because of some problem. Can you help me out?

ASSISTANT: Sure Paul, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Paul, there is no reservation found on your name.

USER: Ok, that is fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your quick response.