Hello.
Hello, do you need any help from us?
Can you help me to book a ticket from HOU to AUS?
Sure, may I know your trip dates?
Ok, please check for the flight which is available for my planned dates  which are Nov 19th and Nov 21st respectively.
Ok, could I have your name please?
Ok, my name is Dorothy Johnson.
Ok, do you need direct or connecting flight?
Ok, my specification is a connection flight.
Ok, do you have any other specifications?
Yes, I need to depart during afternoon.
Sorry, there is no flight on your requested travelling dates.
That is ok, thank you for assisting me.
You are welcome, have a great day.