You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please cancel my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Carol Green.

ASSISTANT: Please wait a moment.

USER: Sure, make it fast.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.