You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Raymond Edwards. I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: I have checked and sorry to say that there is no flight reservation on your name to cancel it.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you.