Are there trains leaving Cambridge after 18:15?
Yes. Can you help me narrow down the choices with a day to leave and destination?
I'm looking for one that goes to Stevenage on Saturday.
I have a train leaving at 19:21 and arriving at 20:10, if that works.
Yes, can you book three tickets on it, please?
Booking was successful, the total fee is 30.72 GBP payable at the station .
Reference number is : S74F7IZS.
Great! Can you help me find a cheap restaurant that serves the americas food?
I do not show any restaurants that fit that criteria. Do you have any other preferences?
I just need something with American food. 
I have found Gourmet Burger Kitchen, they serve north American food, although they are expensive. Would you be interested in booking here? 
No thank you, I am just gathering information for now
Is there anything else I can help you with today?
Can I have the address for the restaurant. 
Absolutely!  The Gourmet Burger Kitchen is located on Regent Street.  Would you like the phone number?  Or anything else?
If there's no cheap American food restaurant, can you recommend a cheap restaurant that serves Chinese food?
Certainly, there's Charlie Chan in the centre area that serves cheap Chinese food. Would you like more information or to book it?