You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight ticket from CLT to ATL?

ASSISTANT: May I know your travel dates?

USER: My travelling dates are Jan 19 and Jan 21.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need connecting flight.

ASSISTANT: Is there any other concern?

USER: I need my depart ticket at evening time.

ASSISTANT: May I know your name please?

USER: Myself Linda Lopez.

ASSISTANT: No flights found as per your preference in our database at the moment.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.