You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my reservation due to my planned event got cancelled, So please help me with that.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, myself Donald Mitchell.

ASSISTANT: There is a reservation on your name, as per your request it is cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.

USER: Most welcome.