You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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: Please wait a moment, let me check with your details in our database.

USER: Sure.

ASSISTANT: May I know your name for cancellation?

USER: Mark Nelson here.

ASSISTANT: Sorry, there are no active reservations on your n.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching our service.