You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation due to cancel of my conference. Could you please help me?

ASSISTANT: Sure, I am here to help you in cancellation.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name for further checking?

USER: I am Nancy Williams.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us with a query.