You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Barbara Wilson. I would like to book a flight ticket from BOS to IAD. Could you please help out?

ASSISTANT: Sure, I will help you. May I know your planned journey dates please?

USER: I am planning to start on 09/17 and return back on 09/19.

ASSISTANT: Please wait a moment.

USER: Sure, please take your time.

ASSISTANT: Thank you for your patience, I found a flight for you in Southwest airlines with price 200. Can I book your ticket?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1008.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.