You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I serve you the best at this moment?

USER: Please book a round trip ticket with Atlanta, GA-ATL.

ASSISTANT: Sure, Can you mention your preferable travelling dates?

USER: Ok. My travel dates are from 08/12 to 08/14.

ASSISTANT: May I know your name?

USER: I am Larry Lee.

ASSISTANT: We found a Southwest airline, of fare- 100, connections-1 available for your journey. Are you able to travel in this flight?

USER: I need a direct flight.

ASSISTANT: Ok, We have Frontier airline, 1009 as flight number, fare- 100 with a direct flight.

USER: Please book a flight.

ASSISTANT: Your booking is done.

USER: Thanks.

ASSISTANT: Thanks for approaching us.