You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I need to travel from Washington, DC - IAD to Dallas and Fort Worth, TX - DFW for holiday vacation. Can you book a flight ticket?

ASSISTANT: Ok, I can help you with that. Can you please provide your journey dates?

USER: My preferable dates are departure on 05/08 and return on 05/10 with one connection limit.

ASSISTANT: Please wait a moment. I will check and let you know.

USER: Sure.

ASSISTANT: Thanks for waiting. There is an availability with airline number 1000, price 200, airline Frontier.

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thanks for choosing us. Have a safe journey.