You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Brandon Rodriguez here.

ASSISTANT: we regret to inform you that there is no reservation found on your name in our records.

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for choosing us.