Enclosed patio with cement slab

I have a customer that has a pored concrete patio that has many tiles cracked, split and upheaving. I can removed a few tiles but as I did it brought up about 3/4" of cement/mortar. Customer wants me to level entire patio so he can put an indoor outdoor carpet down. My question to you is do they make a self leveling grade cement/mortar that can go over the existing tile to level all the dips, cracks and etc. Any and all help would be helpful. Taking all the tiles out is not an option.