I need help booking a train from cambridge to ely. Ok, what day are you traveling? Tuesday and I need to leave after 16:45 please. Yesm there is a train available, the TR7733, and leaves at 17:50. Would you like me to book this? Yes please book it for 8 people and provide the reference number. The train is booked for 8 people and the reference number is OPGQ4971 . Do you need any other assistance? Yes, I'm looking for a college to visit in town. Can you give me some info on what's around? I would be happy to get that information for you. Can I help you find a restaurant or an attraction? Or would you like assistance with accommodations? I am particularly interested in colleges if you would focus on that type of attraction. I would appreciate it. There are 18 colleges in town. Do you have an area preference? Are there colleges in the centre of town? Yes, there are 13. I personally recommend corpus christi. Entrance costs 2 pounds. The address is king's parade, postcode is cb21rh, and phone number 01223338000.