You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my recent reservation due to sudden change in my trip.

ASSISTANT: Ok, may I know your name please?

USER: I am George Collins.

ASSISTANT: George, hold on for a moment please.

USER: Ok.

ASSISTANT: Sorry George, there are no flights reserved on your name.

USER: OK. Thank you for the information.

ASSISTANT: Thank you for choosing us, have a great day.