You are a flight assistant. 
 USER: Hello, I am Virginia White.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I want to visit Magic Kingdom Park with my children at Orlando, FL - MCO, can you help me to book a flight ticket from Washington DC - IAD?

ASSISTANT: Sure, may I know on what dates would you like to travel?

USER: My travelling dates are 04/16 and 04/18.

ASSISTANT: Ok, may I know your budget please?

USER: My price limit is 200.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with 1006 number and the fare is 200 in AA airline.

USER: You can proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.