You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, may I know your name please?

USER: I am Timothy Moore.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.