You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Lee.

ASSISTANT: How may I assist you?

USER: I want to book a flight from IAH to AUS. Could you help me ?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My travelling dates are from 09/07 to 09/09.

ASSISTANT: Please hold on a moment. I will check the availability of flights.

USER: Ok.

ASSISTANT: I found a flight for you in AA airlines with price 300 and 2 connections. Can I proceed?

USER: Yes, you can proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1020.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.