You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Gregory Martin here. I just want to cancel my recent reservation which I have done, due to some health problems. Can you help me out with it?

ASSISTANT: Sure, we are here to help you with that reservation cancel.

USER: Thank you.

ASSISTANT: Please hold for a moment, let me check your previous reservation status.

USER: Ok, sure.

ASSISTANT: There is no active reservation found with your name in our reservation list to cancel it.

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

ASSISTANT: Thank you for reaching us, have a great day.