You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want my cancel reservation because I have some another important meetings on those dates. So, please can you cancel my reservation?

ASSISTANT: Sure, I am glad to help you. Could you please provide your name to check your reservation status?

USER: Myself Karen Davis.

ASSISTANT: Ok, I found a reservation on your name. Shall I proceed with your cancellation?

USER: Please cancel it.

ASSISTANT: Ok, your ticket has been cancelled successfully.

USER: Thank you for your help.

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