You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, may I know your name?

USER: I am Angela Collins. My family tour trip was cancelled, so I want to cancel my flight ticket.

ASSISTANT: Sure, please wait for a while, I will check the availability of reservation on your name and revert you.

USER: Sure.

ASSISTANT: Thank you for choosing us, there is no reservation found on your name.

USER: Thank you, for your service.