Hi, I am looking for a cheap Italian restaurant please.
I have some in the north, center and west side. Do you have a preference in area?
No, no preference. Please just find me one that has a table available for 4 people at 17:45 on Monday. 
I'm sorry but none of the Italian restaurants have reservations available at that time.  Do you want me to check for a different time?
Yes, I'll try for a little earlier, how about 16:45?
Booked at la margherita! Your reference number is NG7AU0Y2. Your table will be held for 15 minutes.
Thank you very much for your help! 
You're welcome. Have a great day!