How do I report income that incurred sales tax with no 1099?

Most of my customers received a W-2 and will supply me with a 1099 for income. However, once I sold products to a retail customer with sales tax  (no labor involved) and they did not ask for a W-2. 3 other times I sold to retail customers and charged sales tax, they did not as for a W-2 so I will not receive a 1099. How do I report income that incurred sales tax with no 1099?