You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I booked a flight ticket in your agency for my holiday trip to New York but now I want to get it cancelled. So can you go ahead and cancel my flight ticket?

ASSISTANT: Ok, I will help you with that. Can I know your name?

USER: I am Stephen Parker.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: Not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.