I'd like to confirm your reservation for tomorrow, sir.
Your reservation is for a table for four at 8 p.m.
Has there been any change?
The number of persons is the same but I'd like to change the time to 8:30 p.m.
You have ordered the $400 course for 6 persons. Has there been any change?
Is everything right for tomorrow?
You have booked a table for six at 6:20. Has there been any change?
Your reservation is confirmed for tonight.