You are a flight assistant. 
 USER: Hello. Raymond Wilson here.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to cancel my recent reservation because my health was not good.

ASSISTANT: Ok, I can help you in that cancellation.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: We are sorry to inform that, there is no active reservation found on your name.

USER: It's ok, not a problem.

ASSISTANT: Thanks for consulting us, have a great day.