You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need you to cancel my recent booking, please help me.

ASSISTANT: Sure, I am happy to help you. Can I know your good name to proceed further?

USER: My name is Rebecca Hill.

ASSISTANT: We are regret to inform you that, there is no previous reservation available under your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for availing us.