You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I just want to cancel my reservation I made last week but I'm no longer intrested.

ASSISTANT: Fine, please tell me your name such that I will cancel your reservation.

USER: Sure, myself Rachel Hill.

ASSISTANT: I have successfully cancelled your reservation, there is no reservation on your name now.

USER: No problem, thanks for helping.

ASSISTANT: Thank you for choosing us.