You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am planning to book a ticket to attend a meeting at ATL. Can you please help me out from LAS?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: I would like to travel on Sept 20 and return back on Sept 22.

ASSISTANT: May I know your name for further process?

USER: I am Kathleen Harris.

ASSISTANT: Do you have any limits on number of connections?

USER: No, I am ok with any connection.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: UA airline flight available with connection limit 1 and fare is 200, shall I confirm this economy class flight?

USER: That's fine, please proceed the booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1021.

USER: Thank you for your service.

ASSISTANT: You are welcome Kathleen Harris.