You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to cancel my recent reservation which I have done earlier . Can you please help me out in cancelling my flight ticket?

ASSISTANT: Let me know your name.

USER: Thank you for the response. Myself Brian Lee.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you.