I am looking for attractions in the centre.
The city centre has many attractions to offer. Do you have a specific type of attraction you are interested in?
I would like the attraction in the centre, and I would like the amount of the entrance fees in the centre.  
There are many museums with free entrance, or nightclubs with fees around 4-5 pounds.  Would you be interested in more information on any of these? 
Actually, can you find a train to birmingham new street for me? I need to leave after 19:45.
What is your departure site and day of travel?
Should depart from Cambridge and go to Birmingham New Street
There are 28 trains that fit that criteria, what time would you like to arrive?
It doesn't matter, the first train after 19:45 works for me. I need to book it for four people, and please provide the reference number.
I was able to book 4 tickets on train TR7769 departing at 20:01 and arriving at 23:44. Your reference number is H6UCCIBA. Is there anything else?
No, that will do it!  Thank you for all your help!
You're welcome. Have a great day.