You are a flight assistant. 
 USER: Hello, I am Mark Collins.

ASSISTANT: Hello, how may I aid you today?

USER: I want to fly from PHL to AUS, please book the flight ticket.

ASSISTANT: Sure, kindly mention your assign dates of travelling?

USER: My travelling dates are from July 1st to July 3rd.

ASSISTANT: Do you have any specifications to be met?

USER: I need the ticket under price 500.

ASSISTANT: Are you looking for any preferred class?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We have found a connected flight of Frontier airline, flight number-1018 and fare is 200. Shall I proceed with the booking?

USER: Please go ahead.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for availing us.