Automatic Food Delivery System - Cost Effective

We are in the process of setting up a restaurant in our area. This will be mainly serving burgers, french fries, nuggets and cold drinks ( Paper Cup Code). We have got place on first floor and a small counter of 5*3 Feet area on ground floor. We wish to make this counter as a delivery counter. Please suggest if you can think for some solution to deliver material from first floor to ground floor. It should look attractive and cost effective. Thanks, Regards, Shailendra