i am looking for a restaurant that serves african food and is moderately priced
I'm sorry, but I'm not finding any moderately-priced African restaurants. Would you like to try a different cuisine?
Sure, can we try gastropub food?
The Cow Pizza Kitchen and bar is in the centre. Would you like their information? 
Yes please.  But you can go ahead at book it for 3 people at 17:30 on Thursday.
Booking was successful. The table will be reserved for 15 minutes. Would you like the reference number?

Yes please, give me the reference number
Your reference number is : 5P3MS6PK.  Do you need any further assistance today?
I'll also need a train from Cambridge.
What is your destination?
I want to get to London Kings Crossing. 
I have all of the available trains on that route this week listed, any preference on date and time?
I need to leave Sunday after 16:15.
TR3353 leaves at 17:00
can you book me 3 tickets please? 
The total for 3 tickets is 56.64 GBP, which you can pay at the station. Your Reference number is : 8YCZ9HSM.
Thank you for all your help.
Was that all you needed?
Yes, that's all. Thank you.
You are very welcome. Have a great day.