You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to travel ATL and CLT, can you reserve flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Dec,09 and Dec,11.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Myself Helen Turner.

ASSISTANT: Do you have any connection limit?

USER: I prefer one connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Please make sure my return time should be in the morning.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.