You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please cancel my reservation?

ASSISTANT: Sure, let me know your name please.

USER: My name is Paul Walker.

ASSISTANT: Give me a moment please.

USER: Sure.

ASSISTANT: Paul Walker.,I regret to inform that there is no reservation by your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for reaching us.