Hello
Hello, how can I help?
I need to fly from Detroit to Pittsburgh on May 27th
Right, I found an Economy flight with Delta for 171 credits
 that takes 6 hours to get to Pittsburgh.
Can you book that for me?
I can also filter the results for a specific airline, class, price or duration.
I would like the shortest flight possible. I don't care about anything else
Right, I found an Economy flight with Delta for 171 credits
 that takes 6 hours to get to Pittsburgh.
OK. Please book that
Is there anything else that I can do for you?
No thanks. Can you confirm the booking?
I can only search for flight availability. I am unable to book the flights from this system. 
Ok. Thanks and goodbye.
Thank you and goodbye!