You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you reserve a ticket from PHL to AUS?

ASSISTANT: Sure, I will help you. Can I have your planned journey dates please?

USER: My travelling dates are Dec 21 to 23.

ASSISTANT: May I know your name please?

USER: I am Brandon Davis.

ASSISTANT: Do you need a connection preference?

USER: I need a direct flight.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with normal-cost airline.

ASSISTANT: I found an economy class in United Airlines with fare 200 and it is a direct flight. Can I book your ticket?

USER: Please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1027.

USER: Thank you.

ASSISTANT: Thank you for choosing us.