You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I address you today at this moment?

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

ASSISTANT: Sure, I am here to aid you in cancellation.

USER: Thank you.

ASSISTANT: On which name your previous flight ticket has been reserved?

USER: My name is David Davis.

ASSISTANT: We did not find any reservation on your given name.

USER: Ok, that's not a problem.

ASSISTANT: Thank you for availing us.

USER: Thanks for your information.