You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: My name is Dorothy Taylor.

ASSISTANT: Welcome to flight booking agency Dorothy Taylor.

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

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

USER: Sure, take your time.

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

USER: That's ok. Thank you, have a good day.

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