You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you aid me in booking a flight ticket from DCA to IAD?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: Sure, I would like to go on Mar 20th and return back on Mar 22nd.

ASSISTANT: Can you please provide me do you need any connecting flight for your journey?

USER: Make sure it is a single connecting flight.

ASSISTANT: Please let me know do you have any other requirement for your journey?

USER: Ensure it is in the normal-cost airline.

ASSISTANT: American Airlines is providing a flight to your region having a ticket fare of 100 with single connecting flight. Shall I proceed with the booking in this flight?

USER: Ok, please proceed for further.

ASSISTANT: Can you please provide your name for booking purpose?

USER: Myself Ruth Davis.

ASSISTANT: I have booked your flight ticket with the flight 1012 in an economy class.

USER: Thank you for booking.

ASSISTANT: You are welcome, thank you for reaching us.