You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me to cancel my recent reservation.

ASSISTANT: Sure, may I know your name?

USER: Larry Martin.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: We could not find any reservation on your name.

USER: Thank you for your information.

ASSISTANT: Thank you for opting us.