You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me to cancel my recent reservation.

ASSISTANT: Sure, may I know your name?

USER: Steven Green.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation on your name.

USER: Thank you for your information.

ASSISTANT: Thank you.