Hi, I need to get a flight from Detroit to Chicago.
On what day do you want the plane to arrive?
Hmm, well, when will the weather be nice in Chicago?
It will be Sunny all day on Saturday in Chicago, with temperatures of around 7 degrees celsius.
Okay, I'd like to arrive on Friday then, so I can have all day Saturday to walk around the city.
I can also filter the results for a specific airline, class, price or duration.
I don't really care what airline, as long as I get there on Friday.
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
Umm, I guess any flight before Saturday would be fine. Thursday would be best.
There is a flight on the 24th. Should I book it for you?
That would be fine, thanks.
May I have your name, please?
Oh, sure. I'm Alexis
Right, your flight is now reserved!
Okay great, I'll have plenty of time to walk around the south side of Chicago with the nice sunny weather.
Enjoy your day. Is there anything else I can do for you? 
Oh, what was my flight number?
The flight ID is 162
Okay, that's all I needed to know. Thanks for your help.
Thank you and goodbye.