You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ronald Campbell.

ASSISTANT: How may I assist you now?

USER: I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: That's ok.

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

USER: Thank you.