You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Lisa Davis. I would like to cancel my flight ticket. Could you help out?

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Sure, please take your time.

ASSISTANT: I am sorry, there are no reservations available.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you.