You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to cancel my reservation as I am unwell, can you please help me?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure.

ASSISTANT: I have found your reservation, shall I cancel it?

USER: Yes, you can cancel it.

ASSISTANT: Your reservation is been cancelled successfully.

USER: Thank you very much.

ASSISTANT: May I know your name?

USER: Sure, my name is Karen Moore.

ASSISTANT: You are welcome, have a nice day.

USER: Thank you so much.