You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for today?

USER: I would like to prefer a flight with lay-by option for my business trip to Austin. Can you book the flight ticket?

ASSISTANT: Sure, I will help you about that. Can you please provide your nearest airport codes of journey?

USER: The airport codes are from PHX to AUS.

ASSISTANT: On which dates you are willing to make your trip can you please provide it?

USER: The travel dates are from 18 Nov to 20 Nov.

ASSISTANT: Do you have any specific timings for your journey at the time of depart and arrival?

USER: No.

ASSISTANT: Is there any other requirement for your journey to met with can you please provide it?

USER: No, that is it.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey which depart from your location in the afternoon with a minimum fare of 100 is provided by Frontier airlines. Shall I proceed with this flight ticket booking?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Can you please provide your name for confirmation of your reservation?

USER: I am Ruth Collins.

ASSISTANT: I have confirmed your flight ticket successfully with the flight 1011 in an economy class.

USER: Thank you.

ASSISTANT: You are welcome, thank you for employing our service.