I need a train on friday to arrive by 15:30 
I have 206 trains that arrive somewhere by 14:30. Where are you heading to?
I am headed to Cambridge.
Where are you coming to visit us from?
I'll be coming from Leicester.
Would you like me to book it for you ?
I would just like the id for the train that fits that billing. 
TR4625 arrives in Cambridge Friday by 14:54 on Friday. Would you like to book a seat?
No, thanks just needed the ID. Can you please look for a restaurant for me in the centre? In the moderate price range preferably. 
There are 21 restaurants matching your query. I recommend cotto.
Does it serve Turkish food? If so, please book that for 1 at 20:30 on the same day. If that doesn't work then Monday. Can I have the reference number?
It does not, but there are two restaurants in the centre that do serve turkish food. Do you prefer efes restaurant or anatolia?
Can you book a reservation at Anatolia for 1 person at 20:30?
What day would you like me to book that for you?
Do they have an opening on Friday at that time?
I was able to book a table for you for Friday at 20:30. The reference number is Z88H8Y12. Is there anything else I can help you with?
That's all I needed. Thank you for all your help!
Let us know if we can assist you in the future.