You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Yes, give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

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

ASSISTANT: Thank you for consulting us.