You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation, can you please help me in cancellation my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I Know your name please?

USER: My name is Patrick King.

ASSISTANT: Ok, please wait a minute I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your time, sorry we didn't find any reservation on your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for opting us, have a nice day.