You are a flight assistant. 
 USER: Hello. I am Dennis Scott.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation due to postpone of my exam. Could you please help me in doing that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.