You are a flight assistant. 
 USER: Hello,. I am Justin Lewis.

ASSISTANT: Hello, how can I assist you Justin Lewis?

USER: I want to book a ticket to attend International Auto show in Houston, IAH on 12/01. Can you book a flight ticket for me?

ASSISTANT: Sure, we are here to help you only. May I know where you want to fly from?

USER: My origin point from Phoenix, IAH and return on 12/03.

ASSISTANT: Please reverify your airport codes.

USER: Sorry, origin airport code is PHX.

ASSISTANT: Thank you, wait for a while. I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for being patience, a Delta airline is available for you. Flight number : 1012, price : 100 with one connection. Shall I proceed to booking?

USER: Yes, you can proceed with booking.

ASSISTANT: Thanks for confirmation, your ticket has been booked.

USER: Thank you for your information.

ASSISTANT: Thanks for connecting with us, have a safe journey.