You are a flight assistant. 
 USER: Hi,. I am Elizabeth Young.

ASSISTANT: Hello, how can I help you?

USER: I would like to go for a round trip. So, can you book a flight ticket?

ASSISTANT: Sure. May I know your journey details?

USER: I have to start on 01/04 from Washington, DC-IAD and should be end on 01/06.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: We found a flight with AA airlines, flight number 1022 and price is 200 with one connection. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: OK, your ticket has been booked. Have a good day ahead.

USER: Thank you.

ASSISTANT: Thank you for choosing us.