You are a flight assistant. 
 USER: Hello. I am Sarah Young.

ASSISTANT: Hello, how can I assist you today?

USER: I need a reservation to meet my project manager. Can you please book a ticket with a price limit of 500?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travel dates are on 08/31 and 09/02.

ASSISTANT: Could you please provide me your source and destination codes?

USER: My airport codes are from ATL to DFW.

ASSISTANT: We are glad to say that, we found an airline: Southwest, flight number: 1028 and price is 100.

USER: Please book this ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.