You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me cancelling my reservation?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: I am Gregory Harris.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Ok.

ASSISTANT: Thank you for waiting. There is no active reservation found on your name in our database to cancel.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.