You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my recent reservation because my trip dates are postponed, can you help me?

ASSISTANT: Sure, can I know your name?

USER: I am Ronald Nelson.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT:  As per your request, we had cancelled your reservation.

USER: Thank you.