You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I just wants to cancel my reservation because the government cancelled my tourist visa all of a sudden. So, please cancel my ticket with the name of Carol Martin.

ASSISTANT: Sure. May I know your name?

USER: Ok.

ASSISTANT: wait a minute. Thanks for waiting. There is no reservation found with your name.

USER: Thank you for your information.

ASSISTANT: Ok, Thanks for choosing us.