I need a train to cambridge that leaves after 18:45.
Where will you be departing from?
I will need to depart from ely. 
And what day are you leaving?
I would like to leave on Saturday.
I have a train on Saturday that leaves at 19;35 and arrives by 19:52. Would that do?
I can work with that.
Would you like me to book tickets for you?
Yes, I need tickets for 5 people.
You are booked for 5 tickets leaving Ely on Saturday at 19:35 and arriving in Cambridge at 19:52. Your reference number is Q245NAJF and the total fee is 17.6 Pounds payable at the station. 
I am also looking for a particular restaurant. Its name is called pizza express.
Great, I see that is a moderate italian restaurant located in the centre. When would you like to book it for and how many people?
Please book a table for the same group of people at 21:00 on the same day.
The restaurant is reserved for 5 people on Saturday. Your reference number is Z5PRYMDV. Is there anything else?
No that is all. Thank you for all your help.
I hope you have a wonderful meal.
Thanks again for all of your help.
Glad I could help. Have a great day.