I'm looking for a Saturday train.
Of course. I have 404 rail departures on Saturday, could you help me with your itinerary please?
I want to leave cambridge to birmingham new street and arrive by 20:45. 
There is a train leaving at 5:00.
Ok, can I get the Train ID and the departure and travel time please?
The train you may prefer is the TR5867 that leaves at 18:01 and arrives by 20:44. It takes 163 minutes. Would you like that one?
That's perfect. I also need a hotel to stay in. Should be rated 4 stars
There are 21 hotels that meet your criteria. Let's try to narrow it down. Can you tell me more about your preferences?
Anywhere in the south. As long as it has free wifi.
I have 2 options for you, is there a price range you are looking for?
No particular price range. I would like to stay in a 4 star guesthouse. 
May I suggest Rosa's Bed and Breakfast?  It's a cheap, 4 star, guest house.
Can you provide me with the address and if they have free parking?
They do have free parking. The address is 53 roseford road. Would you like to book a room?
No thanks, just grabbing some information for now.   Thank you for all of your help.
Have a nice day.