You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Samuel Nelson.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Nelson, there is no reservation found on your name to cancel it.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome.