You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Moore.

ASSISTANT: How may I assist you now?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I will help you with that. Please wait a moment to check your previous reservation.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

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