Are there restaurants in the city centre which serve North American cuisine?
There is one expensive restaurant called gourmet burger kitchen would you like me to book that for you?
Yes, thanks! 
What day and time would you like me to book it? 
I need it booked for 8 people on Sunday at 15:45. I'd also like to have the reference number. 
Your booking was successful. The table will be reserved for 15 minutes only. Your reference number is HJCYIRG6. Can I help you with anything else?
Yes. I am looking for a train that departs from Cambridge on Monday.
Where will you be going?
I need to get to Stevenage by 16:45.
Train ID TR1898 will have you arriving at Stevenage at 14:10. It leaves Cambridge at 13:21.
That's just perfect. Can you buy our tickets? Same group of people as the gourmet burger kitchen.
I have purchased 8 tickets for you. The reference number is PWMD3SIU.
Thank you that is all I needed today. 
Have a good day.  Thank you for using our service.
Thank you, I hope you have a good day as well!
It's been a pleasure. Good day and goodbye.