You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my recent reservation, Can you please help me in that?

ASSISTANT: Sure, may I know your name?

USER: My name is Lisa Nelson.

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

USER: Ok, that's not a problem.

ASSISTANT: Thank you.

USER: Thanks for your information.