You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Lisa Miller.

ASSISTANT: How may I aid you?

USER: Due to sudden changes in my Base ball tournament I need to cancel my Flight journey. Please cancel my ticket booking.

ASSISTANT: Sure, I am ready to help you.

USER: Thank you.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Oh! My manager might have cancelled it earlier. Thanks for your time.

ASSISTANT: Thank you for consulting us, have a safe journey.

USER: You are welcome.