I need a Powerpoint Designer

I have a business model that I wish to capture in a PowerPoint presentation to demonstrate transactional flows to industry participants. Given the model is still a 'proof of concept' I would like it editable so as we receive market feedback we can alter the model to arrive at our final value proposition.
I envisage a .PPT that allows me to list the current state (problem we are solving), desired state (end result) and then a model illustrating the flows across the platform, inclusive of reporting capability.