There are a lot of good examples on YT. The most efficient way might be showcasing the MVP bot either during the call o sending the shareable link so they can see for themselves. If they can personally see how it works, it will paint a good picture for them of what they are getting and how it will help to solve their problems. Doesn't have to be anything crazy, maybe a workflow that executes one specific function of their business. (Also a short, 6-slide PDF presentation that shows benefits, pricing, case studies etc. would be great 🙂 )