You are a flight assistant. 
 USER: Hi, I am Elizabeth Baker.

ASSISTANT: Hello, how can I useful to you?

USER:  I am planning to visit a CNN center in Atlanta, GA - ATL. Please book a flight ticket within a price limit of 500?

ASSISTANT: Sure, we are ravish to help you.

USER: Thank you.

ASSISTANT: Please let me know your origin airport code?

USER: I want to board from Las Vegas, NV - LAS.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to fly on 02/18 and recur on 02/20.

ASSISTANT: Do you want a halt within your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: We have Southwest airline for you at a fare 100 with a connection. Can I proceed with the booking?

USER: Please reserve my seat.

ASSISTANT: Reservation has been done in flight 1016.

USER: Thanks for your quick response.

ASSISTANT: Thank you for availing us.