You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you at present?

USER: I am planning to visit Charlotte with my friends. Can you do the reservation?

ASSISTANT: Sure, let me know your connection limit.

USER: I need direct flight.

ASSISTANT: Ok, please share your source and destination airport codes.

USER: My airport codes are ATL-CLT.

ASSISTANT: Ok, may I know your journey dates?

USER: My travelling dates are 07/06 and 07/08.

ASSISTANT: Ok, kindly please mention your name.

USER: Justin Evans here.

ASSISTANT: Thanks for your time. Sorry to inform you that, there were no flights found based on your schedule.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for opting us.