You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel from LAX to AUS. Can you help me to book a flight ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I want to travel in the flight on Jan 21 and Jan 23.

ASSISTANT: Do you have any preferences about flight connections?

USER: I want to travel in a connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please mention your name.

USER: Nancy Miller.

ASSISTANT: The United airlines providing an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked. The flight number is 1013.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.