You are a flight assistant. 
 USER: Hello. I am Betty Martinez.

ASSISTANT: Hello, How can I assist you today?

USER: I want a direct flight from NC - CLT to attend to my cousin marriage, can you help me for booking?

ASSISTANT: Sure. We are here to help you. To book flight I need your destination code.

USER: Sure, my destination code is PA - PHL.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are from 02/26 to 02/28.

ASSISTANT: Do you have any other requirements to met?

USER: My price limit should not exceed with 1000.

ASSISTANT: Please wait for a while I will check and revert you.

USER: Sure.

ASSISTANT: Unfortunately there are no flights available with your requirement.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thank you for consulting us, Have a good day.