You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you today?

USER: I already book a flight ticket to reach New York but my plan to cancelled due to some reason. Can you cancel my reservation?

ASSISTANT: Sure, I'll help you in cancellation. Please let me know your name to check the reservation list.

USER: My name is Jason Campbell.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no reservation found by this name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.