You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to cancel my previous flight ticket booking due to an emergency, so can you please cancel my flight ticket booking?

ASSISTANT: Sure, may I know your name for the cancellation process.

USER: Thank you and my name is Christopher Wilson.

ASSISTANT: Sorry, as per your concern I can not cancel your reservation, as your reservation is not found as per our records.

USER: Not a problem with that one, thank you for checking and providing the information.

ASSISTANT: Welcome, thank you for reaching us.