You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Paul Clark.

ASSISTANT: Paul, how can I aid you today?

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

ASSISTANT: Sure, I am here to help you out. Hold on for a moment. Let me check.

USER: Sure.

ASSISTANT: Sorry Paul, there are no flights have been reserved formerly.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.