You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: Can you  please book a flight ticket from ATL to LAS?

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

USER: Thank  you. I have  planned my travel  dates as Dec 13 and Dec 15.

ASSISTANT: May I know your name for further process?

USER: Sure, myself Donald Thomas.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I am not specific about any timings.

ASSISTANT: Do you have any another specifications?

USER: Yes, I am  preferring single connecting flight.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, take your  time.

ASSISTANT: Spirit airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: That is fine, please proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1006.

USER: Thank you for your  help.

ASSISTANT: You are welcome Donald Thomas.