You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Lisa Lee, want to cancel my trip as I had fought with my friends. Can you help me in this?

ASSISTANT: Sure, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Lisa, there is no reservation found with your name in our records.

USER: That's fine, thank you.

ASSISTANT: Most welcome.