You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Barbara Lewis.

ASSISTANT: Barbara Lewis, how can I aid you today?

USER: Can you help me in cancelling my recent reservation?

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

USER: Sure.

ASSISTANT: Sorry Barbara Lewis, there are no flights reserved on your given name formerly.

USER: Its ok, thank you.

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