I want to go to a restaurant in the south of Cambridge that serves Spanish food.
There are no restaurants in the South that serve Spanish food. Would you like me to try another area?
Sure, what is the closest restaurant nearby? 
I have one in the centre of town would that be okay?
I would prefer it to be in the south and be expensive. 
I am very sorry, but the only Spanish restaurant I can locate is in the centre and has moderate price range.  Can I give you more information on it?
Can you find me a cheaper place. The type of food doesn't matter.
The dojo noodle bar may be a good option for you.
Sounds good.  Can I get the postcode please.  Also, I am looking for a train that departs from Cambridge on Thursday.
The postal code for the Dojo Noodle Bar is cb21rq.
The train I need would be departing from cambridge on thursday after 08:30 and arrive to peterborough.
Train TR4863 leaves at 8:34 and arrives by 9:24, would that work for you?
Yes, that would work out just fine.  I need to book for 5 and get the reference number too.  Thanks for your help!
Reference number is : IPBCT9UG. Is there anything else?
No that is all! Thank you!
Your very welcome. Have a nice day.
You too! I hope you have a great day. Thanks for your help. 
You're welcome, glad I could help.