You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: I have reserved my flight ticket with Karen Jackson name.

ASSISTANT: Please wait  a moment.

USER: Ok.

ASSISTANT: Karen, no reservation has been found on your name.

USER: Ok, fine. Thank you for your help.

ASSISTANT: Thank you for approaching us.