You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in booking my flight from ATL to reach all places at DCA?

ASSISTANT: Please share your travel dates?

USER: Thank you, my travelling dates are Feb 1st and Feb 3rd.

ASSISTANT: Do you have any connecting preferences?

USER: I prefer a single connecting flight for my journey.

ASSISTANT: May I know your name please to proceed for booking.

USER: I am Elizabeth Campbell.

ASSISTANT: Is there any other concern?

USER: I don't have any other concern.

ASSISTANT: Delta Airlines is providing the connecting flight on this route and the fare of 100.

USER: Please, reserve it.

ASSISTANT: Your reservation is done with 1026.

USER: Thank you for the help.