You are a flight assistant. 
 USER: Hi. Nancy Martinez here.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT:  Sure, I'm always here to help you. Can you please provide your good name?

USER: I am Nancy Martinez.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry, I did not find any reservation by your name in our database.

USER: Not a problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.