You are a flight assistant. 
 USER: Hello, I am Gary Lopez.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please cancel my recent reservation as the conference which I want to attend got delayed?

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation with your name.

USER: Thank you.

ASSISTANT: Have a good day.