You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation, as my health is not good to travel. Can you please help me with this?

ASSISTANT: Sure, can I know your name please?

USER: I am Dennis Roberts.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry Dennis, there is no reservation found to cancel.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.