You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Due to my ill health, I would like to cancel my recent reservation. Please help out.

ASSISTANT: Sure, I am here to help you with that. May I know your name please?

USER: My name is Mark Davis.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found on your name in our reservation list to cancel it.

USER: Ok, no problem. Thank you for your information.

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