You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Michael Hall. I would like to cancel my existing reservation.

ASSISTANT: Sure, please hold on for a moment.

USER: SUre, please carry on.

ASSISTANT: I am sorry, there are no reservations with your name.

USER: Wow! No problem, thank you for the information.

ASSISTANT: Thank you, have a good day.