You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: Myself Melissa Nelson.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Melissa Nelson, I found your reservation and I have successfully cancelled it.

USER: Thank you.

ASSISTANT: Thank you for choosing us.