You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Alexander Nelson. I want to cancel my recent reservation due to some argent work.

ASSISTANT: Sure, wait for a moment.

USER: Can you help me in cancel my reservation? Sure.

ASSISTANT: Sorry to say that, no reservation was found with your name.

USER: Ok, No problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you.