You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Owing to an emergency, my planned trip to Navajo adventure got cancelled. So I want you to cancel my recent reservation.

ASSISTANT: Ok, may I know your good name?

USER: Sure, David Davis here.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a reservation on your good name. It has been cancelled successfully.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us.