I am looking for a restaurant in the centre that serves indian food.
Sure, what is your price point?
as cheap as possible
There are three restaurants: Kohinoor, The Gandhi, and Mahal of Cambridge.
ok lets try the gandhi, a table for 4 on sat at 14:15, and I need the reference number
The booking was successful and your reference number is 57DS952F.
I'm also looking for a train that leaves London Kings Cross on Saturday and arrives in Cambridge by 09:45. 
I have train TR8885 that leaves at 07:17 and arrives in Cambridge by 08:08. Will that work for you?
Would it be possible to book that train for 4 people?
I have made your reservation for 4 tickets on TR8885. The total fee is 75.52 GBP payable at the station and your reference number is KO3L1QDO.
Thanks, that's all I needed today!
Thank you. Let us know if you need more help.