You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Paul Scott here.

ASSISTANT: In which way I can aid you at this moment?

USER: I want to meet my twin sister at Charlotte, so please book my ticket from Washington DC.

ASSISTANT: Sure, I can aid you in booking flight ticket. Can you please let me know your preferable travel dates for booking flight ticket?

USER: My itinerary dates are 06/17 and 06/19.

ASSISTANT: May I know your preferable airport code names for further process?

USER: My genesis and terminus airport codes are DCA and CLT.

ASSISTANT: Just give me a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: There is a flight available in this route as per your requested dates, airline is AA and connection limit of this airline is 1 with minimum fare of 200. Are you comfortable with this flight?

USER: Please reserve my ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1012.

USER: Thank you for your service.

ASSISTANT: You are welcome Paul Scott.