You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER:  Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Sure, can I have your good name please to check your reservation status?

USER: My name is Karen Jackson.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Karen Jackson, no reservation has found under your name to cancel.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.