What trains leave London Liverpool Street and go to Cambridge?
There are several trains that depart from London Liverpool Street on Friday. Is there a particular time you wish to leave by?
Yes, sometime after 09:15.
There are several trains departing on Friday every :39 of the hour from 9:39 to 23:39. Would you like me to book one of these for you?
I'll go with the 9:39.
Wonderful, your train has been booked!
I think I forgot to add that I will need the booking for 3 people please. Will you modify the booking for me?
Great! Thank you for your help.
Please modify the booking for three people please.
Sure. Just a moment. 
I need a reference number for the train. Then I need to find a moderate Italian restaurant in the east for 3 people at 16:30 on Saturday, and a reference number.
Ok, I have three tickets booked on the 9:39. The reference number is QOL9GX6F. Does Pizza Hut Fen Ditton sound good? It's the only Italian restaurant in east.
Yes I think that would be good. Is that available at 4:30 PM?
What day and how many people are you looking to book for?
I am looking for 3 people, at 16:30 on saturday.
Ok, I have booked dinner for three on Saturday at 16:30 at Pizza Hut Fen Ditton. Your reference number is MLMBLJEG. Enjoy your meal!
Thank you that is all the info I need.
Thank you for choosing Cambridge TownInfo centre.  Have a nice trip!