You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Myself Dorothy Walker. I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure Donna, I am here to help you.

USER: Thank you for accepting my request.

ASSISTANT: There is a reservation found under your name to cancel it, shall I cancel it?

USER: Sure.

ASSISTANT: Ok, your reservation has been successfully cancelled.

USER: Thank you for your help.

ASSISTANT: You are welcome.