I need a train that leaves on Sunday for Broxbourne.
I have 19 trains going to broxbourne on Sunday. To help narrow it down, where would you like to depart from and what time?
I want it to leave from cambridge after 09:15.
Let me look up those times for you. One minute.
Not looking to book, can I just get the train ID, price, and travel time? Thanks!
I'm sorry, I'm not finding that fits those criteria. Is there a different time you could leave? 
There are no trains going to broxbourne from cambridge on Sunday after 09:15?
No, I'm sorry, it doesn't appear that those trains run on Sundays.  Is there a different day you could travel?  Also, will you leave from Broxbourne or Cambridge?
I need to go TO Broxbourne FROM Cambridge on Sunday, leaving any time after 9:15. Please check again with those details, please. 
I'm terribly sorry -- you are correct.  There are trains every hour, at one minute past. There is a 10:01 train on Sunday, for example. Travel time is 60 minutes.
Great. What's the train ID and price?
The TrainID is TR9580 which leaves at 10:01. The price From Cambridge to Broxbourne is 14.32 pounds. Do you need additional information?
Yes, what is the duration of the train ride?
The duration is six minutes. Can I get you a ticket?
No, that's all right.
Let us know if you need anything else.