You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I just want to cancel my reservation due to sudden meeting. Please aid me in this?

ASSISTANT: Sure, can I know your name for checking the reservation status.

USER: Ok, James Martinez is my name.

ASSISTANT: Sorry James, there is no reservation available on your name.

USER: Ok, not a problem. Thanks for the kind information.

ASSISTANT: You are welcome.