You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My business meeting has been cancelled. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Ok, may I know your name?

USER: Sure, my name is Matthew Martin.

ASSISTANT: Sorry Martin , no reservation found with your name to cancel your reservation.

USER: Ok, no issues. My sister might have cancelled my reservation. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.