Can you help me find a cheap place to eat?
There are 22 restarants serving cheap food. What type of food would you like?
Indian would be good as long as it's in the center. I need to book a table for 2 people at 18:15 on a Sunday.
The Gandhi has great food at an even better price! Should I book you a table here?
Yes, that would be fine.
Unfortunately there are no tables available for Sunday at 18:15. Would you like to try for a different day or time? 
Yes can you try Sunday at 17:30 please
I'm sorry, but booking was unsuccessful. Could you try a different day or time?
do you have anything available for sunday?
No, could you try another day and time?
How about 17:15?
I was able to book the table for you for your party of 2 on Sunday at 17:15. The reference number is Z16ZTXKY.
Great. That'll be everything. Thank you!
Thank you, good bye.