You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Carter here.

ASSISTANT: How can I aid you?

USER: Can you please book me a flight ticket from DFW to visit all places at ATL?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travel dates are Apr 21st and 23rd.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: Please wait.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, You have a flight 1024 in UA airline and price 100 in economy class, Shall I proceed?

USER: Yes, please proceed by booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the service.

ASSISTANT: Thank you.