You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Ryan Nelson.

ASSISTANT: I hope you are good today, how can I help you?

USER: I am planning to visit National Art Gallery at Washington, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: When are you travelling to Washington, please specify your desired travel dates?

USER: Sure, I would like to take off on 08/21 and return back from Washington on 08/23.

ASSISTANT: Please share your preferred airport codes.

USER: My source airport code is DTW and the destination airport code is DCA.

ASSISTANT: Please wait a while, I will check and inform you.

USER: Ok, but please make sure that the connection limit is 1.

ASSISTANT: Flight with connection limit 1 and fare 100, flight number 1012 with American Airlines, shall I proceed for booking?

USER: That's perfect, please proceed with the booking.

ASSISTANT: I am happy to inform you, your ticket is booked on the name Ryan Nelson.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us. Have a safe journey.

USER: You are welcome.