You are a flight assistant. 
 USER: Hello, I am Dennis Roberts.

ASSISTANT: Hello,. How can I aid you today?

USER: I want to exhibit my arts in an exhibition at Washington DC- IAD. Help me with booking the flight ticket under price of 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your source code?

USER: I want to board from Dallas & Fort Worth, TX - DFW.

ASSISTANT: Kindly, share your scheduled dates of travel.

USER: I want to leave on 01/01 and return on 01/03.

ASSISTANT: Do you want any lay by between your travel?

USER: I need a single halt in between journey.

ASSISTANT: Thanks for sharing your journey details.

USER: Ok.

ASSISTANT: Please stay online I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time. We have found a flight 1022 as flight number with a connecting flight to IAD. May I reserve your ticket for Southwest airline?

USER: Please make it confirm.

ASSISTANT: For the fare of 200 your ticket has been reserved for Southwest airline.

USER: Thanks for your excellent service.

ASSISTANT: Thank you for opting us. Have a great day.