I am looking for an Italian restaurant in the west part of town
Okay I have found 2 restaurants. One is in the moderate price range and one is in the cheap price range. 
I want the cheap one please
La Margherita fits the bill.  Great place.  Can I make a reservation for you?
Yes, Please. I'd like it for 3 people at 6:45pm on Saturday.
That booking was successful. Your reference number is 3LWL9XAA.
Thank you for all your help. Have a great day.
Happy to be of help, and I hope you enjoy your meal!