Hello.
user
Hello, could you please tell us for what help you approached us?
assistant
I am looking for a flight from AUS to DFW, can you help me?
user
 Sure, may I know your departure and arrival day?
assistant
I want to take off on 16 Jan and return on 18 Jan.
user
Ok, could I have your name please?
assistant
I am Andrew King.
user
Ok, do you need direct or connecting flight?
assistant
I need a connecting flight.
user
Ok, do you have any other specifications?
assistant
I prefer to travel in economy class.
user
Sorry, there is no flight on your requested travelling dates.
assistant
It's ok, not a problem, thank you.
user
You are welcome, have a great day.
assistant