You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Please help me to cancel my recent reservation.

ASSISTANT: Sure, I am happy to help you. May I know your good name?

USER: Thomas Hall.

ASSISTANT: Sorry, we did not find any active reservation on your name in our data.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.