You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you book my ticket from AUS to IAD?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My trip dates are Feb 24 and 26.

ASSISTANT: Can I have your name please?

USER: Daniel Young here.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: May I know your other specifications?

USER: I have no other preferences.

ASSISTANT: I found an economy class in Southwest airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Please book my ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.