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, may I know your good name please?

USER: Donna Evans here.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: That's ok. Thank you.

ASSISTANT: Thank you for approaching us.