You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to an urgency work, I would like to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, may I know your name so that I can help you easily to cancel it?

USER: My previous reservation has done with the name Jonathan Moore.

ASSISTANT: Sorry Jonathan Moore, there is no reservation found under your name.

USER: Ok, not an issue. May be my brother has cancelled my ticket on behalf of me.

ASSISTANT: Ok, thanks for choosing us.

USER: Thank you for providing information.

ASSISTANT: It's my pleasure.