Hello, Elizabeth Allen here.
user
Hello, how may I help you?
assistant
Is there any best airlines that could travel from DEN to ATL?
user
 Which airline would you like to use? May I know your journey dates?
assistant
I prefer to travel on 08/27 to 08/29 with AA airline.
user
Sure, let me check the availability from AA airlines.
assistant
Ok.
user
I have found a flight from Southwest airlines are providing service. Do you fine with that?
assistant
Yes, please proceed.
user
Sure. Your ticket has been booked, have a happy journey.
assistant
Thank you for your services.
user
Most welcome.
assistant