You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Charles Rodriguez. I am planning to cancel my recent reservation. Can you please cancel my ticket?

ASSISTANT: Yes, I can help you.

USER: Sure.

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

USER: That's fine.

ASSISTANT: Thank you for consulting us.

USER: Thank you for your service.