Hi.  I'd like to book a flight from Detroit - DTW to Austin - AUS.  My name is Carolyn Scott.
user
Hello Carolyn. I will help you look for a flight. Can you tell your travel dates?
assistant
I'll be there from March 13 to March 15 for SXSW.
user
Sure. Let me put it my system and see which all flights have seats available. I found a business class seat for you. But I forgot to ask if you have any specific airline in mind?
assistant
Any normal-cost airline would be fine.
user
Oh, so the one I found was a low-cost airline. But I couldn't find any normal-cost airline for you. Is low-cost airline fine with you?
assistant
I'd prefer a normal-cost one.  If there isn't one now, I'll check back another time. Thank you for your assistance.
user
Oh sure. I hope you find one. Thank you. Have a nice day.
assistant