I am looking for an attraction in the centre of Cambridge.
There are several attractions in the town centre. Are you looking for a particular type?
Yes, please find any museums in the town centre.
There is the Whipple Museum of the History of Science located in the town centre, on free school lane. Is there any thing else I can help you with?
I need the postcode. Also, is there any place in town serving barbeque?
The museum's post code is cb23rh. Sadly, there are no restaurants serving barbeque. Is there something else you might be interested in instead?
I am also interested in a moderately priced place I can get barbeque.
I do apologize there are no restaurants serving barbecue. Is there something else you might be interested in instead? 
Are there any places that serve gastropub food?
Yes, The Cow Pizza Kitchen and Bar is a moderately priced gastropub in the center of town. Would you like a table there?
Sure! For 5 people at 13:45 on Sunday please. Thank you!
They are not available for that time, is there another day and or time that you would like me to check?
Sure, would 12:45 be available?
Alright, you're booked for 12:45. Your reference number is DXMY5V92.
I would also like to book a taxi that arrives by 12:45 to the restaurant. I would also like its contact number and car type.
I was able to get a blue lexus and their number is 07087322851
Perfect. Thank you very much for your help. 
You're welcome! Enjoy your stay.