Hello, I'm looking for a restaurant that serves North American food.
Gourmet burger kitchen serve North American food do you want me to book a table?
I also need it in the expensive price range.
Yes, the Gourmet Burger Kitchen is rated as expensive. Would you like to book?
I need the post code actually. 
The post code for gourmet burger kitchen is cb21ab.  Can I help you with anything else today?
Yes I am looking for a train leaving Cambridge, arriving by 12:30 on Wednesday to Bishops Stortford.
If you take the TR8224, you'll get to Bishop's Stortford at 12:07.
And what's the travel time on that?
The travel time on TR8224 is 38 minutes. 
Great!  Thanks for the information.  That will be all for today.  Have a great day!
You're very welcome. You have a great day as well, goodbye!