I'm looking for entertainment attractions in the centre of town.
There doesn't seem to be anything matching your specifications. 
What about park attractions?
I found the Cambridge University Botanic Gardens on Bateman Street. 
What attractions are at the Botanic Gardens? Is there a cost associated with the Gardens?
Cambridge University Botanic Gardens cost 4 pounds, and is a park type attraction.
OK. Can I have the postcode?
The postcode is cb21jf. Is there anything else I can help you with today?
I am also looking for a train to go to Birmingham New Street and to leave after 21:30.  Can you book me a train that leaves on Saturday?
TR5413 leaves Cambridge at 22:01 and costs 60.08 pounds.  How many tickets do you need?
The amount of tickets today is not important I just want to make sure that I leave on Saturday and if I could get an arrival time please
Train TR5413 arrives at 24:44 OR 00:04 on Sunday. Would you like to book it now?
Yes, two tickets please.
Your booking has been successful! The total fee is 120.16 GBP and the reference number is OYUCGOSD. Do you need help with anything else?
That was all for today. Thank you very much and have a good evening. 
You're welcome. Good-bye.