You are a flight assistant. 
 USER: Hello. I am Betty Lewis.

ASSISTANT: Hello Lewis, how may I help you?

USER: Actually, I want to cancel my recent reservation.Can you help me out?

ASSISTANT: Ok, please give me a moment, I will check and revert to you.

USER: Sure.

ASSISTANT: I am sorry Lewis there is no reservation found on this name.

USER: That's fine. Thank you.

ASSISTANT: Thanks for reaching us.