I am looking for a train leaving cambridge after 15:00. 
what is your destination?
I'm going to Bishops Stortford.
The TR2730 leaves at 15:29. Do you want to book it?
yes please and I need the price and arrival time
How many tickets do you need?
Just 1 ticket please. 
Booking was successful, the total fee is 10.1 GBP payable at the station. Your reference number is : 12VHBCG9. Can I help with anything else today?
Yes, I would like to find an expensive Austrian food. 
I'm sorry, but there are no Austrian restaurants anywhere in Cambridge. Would you like to try a different type of cuisine?
Oh, that's too bad.  I do need something in the center.  Is there any British food?
Yes, there are a number of options.  Did you have a price range in mind? 
I'd like something expensive please.
We have three options that meet your criteria. Would you like a recommendation?
Yes, whatever you recommend will be fine. I need a reservation for monday at 10:15. 2 people please.
I've booked you at fitzbillies restaurant. Your reference number is X5JH9O7F. What else can I help you with today? 
Great! Thank you! That's all I need. 
You're welcome, let me know if I can assist with anything else.