I'm looking for an expensive restaurant in the centre.
I have many. Could we narrow it down a bit by the type of cuisine you may be looking for?
I'd like to try Indian cuisine. I a table for three  at 15:45 on Monday.
I can't seem to find a table that is available at that time. Would you be interested in trying a different day or a different time slot?
Yes, let's try for 14:45 instead. 
Booking at Curry Garden was successful. The table will be reserved for 15 minutes. Reference number is : 3HVUQFTT. Is there anything else I can help you with?
No, that was all I needed right now. Thank you, goodbye.
You're welcome, enjoy your meal.