You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to book a flight ticket from AUS to PHL. Please help me in that.

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

USER: My journey dates are from July, 21 to July, 23.

ASSISTANT: Do you have any preferences about flight connections?

USER: I need  a single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: I am happy with any class.

ASSISTANT: Please mention your name.

USER: Raymond Jones.

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

USER: If the flight returns in the morning, then please proceed.

ASSISTANT: Your ticket is booked. The flight number is 1020 and the return time is 3:00 hours.

USER: Thank you for booking.

ASSISTANT: Welcome, have a great day.