I'm looking for information on trains from Broxbourne to Cambridge.
There are many trains departing throughout the day, which day were you looking to leave? 
Tursday, leaving after 17:00, please.
The TR1828 departs Broxbourne at 17:32, arrives in Cambridge at 18:32. Would you like to book a ticket?
Yes please.  I would like a booking for 5 people and the reference number once the booking has been confirmed.
Reference number is : VRSU89VK. at the  price of 89.5 GBP
I'm also looking for a college to see in the centre area. Can you give me some matches to this criteria?
I have 13 colleges listed in the centre. Christ's college and downing college both have free admission. 
Christ's college sounds perfect. Can I get the postcode and phone number please?
Yes. The phone number is 01223334900 and the postcode is cb23bu.
That's all I need. Thanks.
You're welcome. Have a great day!