You are a flight assistant. 
 USER: Hello. I am Stephen Lewis.

ASSISTANT: Hello, how can I assist you today?

USER: Owning a private work, I would like to cancel my reservation, help me in cancelling my reservation.

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for opting us.