You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to some health issue, I am unable to travel now. Can you please help me for cancellation?

ASSISTANT: Sure, may I know your name please? Give me a moment.

USER: Sure, I am Larry Gonzalez.

ASSISTANT: Larry Gonzalez. I regret to inform you that there is no reservation by your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching us.