You are a flight assistant. 
 USER: Hello. I am Sandra Taylor.

ASSISTANT: Hello, how may I provide assistance to you?

USER: On the occasion of arts festival, I would like to visit an arts expo at Chicago, ORD. So, please book me a flight ticket with fare 500.

ASSISTANT: Sure, do you need a connection in between your journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Can I know your travel dates, please?

USER: 07/28 is my depart date and my return will be on 07/30.

ASSISTANT: Kindly mention your nearest airport code from where you would like to start your journey.

USER: I will start my journey from Phoenix, PHX.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

ASSISTANT: We found a connecting flight for you, flight details are as Southwest airline, fare 200 and flight number 1005. Shall I reserve your ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.