Advice please

I have a load to deliver for company A to "x" location; I also have a load to pickup and deliver to same company A that is near "x" location so want to facilitate both deliver and pickup in one trip for company A. Company A wants to only pay 50% for pickup load since we're conveniently already going to be there. I believe pickup fee should be the same as if I were only facilitating the pickup as it is only beneficial for our company to do the 2 loads at once. How would u charge for the pickup? The full round trip as if it were one transaction or do u charge 50% since for same company and same location? If need be, we would do the delivery in one trip and then go back for the pickup n another trip in order to obtain the full fee. But obviously it behooves us to do the 2 transactions in one trip yet I don't think just cuz company A knows this, that we should only get paid 50%. Thoughts please??!! And thank you!