You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Katherine Thompson. I want to visit Detroit-DTW for attending a musical concert, so I want to book a ticket from Washington-IAD.

ASSISTANT: Sure, I can you help you in booking flight ticket. May I know your preferable journey dates for booking flight ticket?

USER: I am planning to start on 08/12 and return on 08/14.

ASSISTANT: Thanks for waiting. There is a flight available as per your requested dates, airline is AA and flight number is 1011.

USER: Please proceed for booking.

ASSISTANT: Ok. Your flight ticket is booked successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.