I am looking for a train to Cambridge leaving around 16:00 can you find this for me .
Sure, but do you mean the train is leaving cambridge? if so where would you like to go?
I am looking for a train to take me to Norwich coming from Cambridge. preferably after 16.00 on Wednesday.
The TR7047 train departs Cambridge for Norwich at 16:36. Would you like me to book it for you? 
I might be interested in that. I just want to confirm. That leaves AFTER 16:00, correct?
Yes, TR7047 departs at 16:36 and arrives at 17:55. Would you like me to help you book a ticket for this train?
Yes. Also, I am looking for attractions in town center that provide entertainment
I'm afraid no attractions match that description. Could you like to check out other areas of the city?
OK, what about colleges in the town centre? 
Unfortunately there are no colleges in the centre of the city. Would you like me to check in other areas?
No. I would like a place to go in the centre that is entertainment. Can you please check again?
Actually, I don't have any entertainment, but there are 13 colleges in the centre. 10 have free entrance and 3 have an entrance fee. Would you like more information?
Can you give me two free options?
Sure, there's Pembroke College and Saint Catharine's. If you'd like to visit one of those I could give you the address.
Can you give me the phone number for Pembroke College?
The phone number for Pembroke College is 01223338100.
Thank you. Could you also give me the postcode and address of Pembroke college?
Certainly, pembroke college is located at trumpington street, postcode cb21rf. Can I assist you with anything else?
No I think that's all I need. Thanks for the help!
It's my pleasure. Have a great day! Goodbye!