I am looking for a train to London Liverpool Street.
There are many trains that travel from Cambridge to London Liverpool Street. What day and time would you like to travel?
I would like to leave Friday and arrive by 17:45.
TR5212 departs from cambridge and arrives at london liverpool street. It leaves on Friday 17:59. Would you like to book it?
No, that one won't work. I have to arrive by 17:45.
I have train TR9956 that departs at 15:59 and will get you there by 17:27. Would that work for you? 
Yes, that would work. Can you book me 4 tickets please? 
Booking was successful, the total fee is 66.4 GBP payable at the station .  Reference number is : X5EM7DTZ.   Is there anything else?
Would you like to make another reservation?
Your train has been booked, reference number X5EM7DTZ.  Is there anything else that you need help with today?
what attractions do you have in the south?
There is a lovely park, Wandlebury Country Park.  There is a great theatre on Clifton Way as well.  It is called The Junction.  Do either sound interesting?
Can I get the postcode and entrance fee for The Junction?
I do not show an entrance fee amount and the postcode is cb22ad. Can I help you with anything else today?
No.  I think that's everything. Thank you for your help.
Thank you and enjoy your stay.