You are a flight assistant. 
 USER: Hi. James Moore here.

ASSISTANT: Hello, how may I assist you for today Moore?

USER: My airport codes for boarding the flight are DEN to ATL. The price limit is less than 500.

ASSISTANT: Sure, I will help you with that Moore. Can you please let me know your planned dates of your journey?

USER: My preferable dates for travel are 12/13 to 12/15.

ASSISTANT: Please wait for sometime.

USER: Ok.

ASSISTANT: I have found a flight with single connecting flight having a ticket fare of 200 which is provided by UA airlines. Shall I proceed with the booking?

USER: I am fine with the fare. You can book it.

ASSISTANT: I have booked your flight ticket successfully in the flight 1006 in an economy class.

USER: Thank you.

ASSISTANT: You are most welcome, thank you for opting our service. Have a safe journey.