How is the best way to ask a rich person to invest in your dream?  

Actually, it's the very rich people who provide the funds for the banks. It's an investment for them, and it comes with a bonus-interest. Try a personal loan, or a government grant. I know there are plenty of opportunities through the government to help women become business owners. If you are dead set on asking your well-off friends, just explain what you would like to do. If they are interested, they will volunteer the backing.

Starting your own bakeshop or bakery is a wonderful idea. That bakery that you are going to put up will be the best bakery that is. That is good business. As to how, it is easy, just go to those rich and tell them that you want to put up a bakery. If they know that you are a trusted person, they will help you. Why not start small then when it grows, that's the time to look for investors? As many have said, start with what you have.

Be his very best friend. Oftentimes, people are skeptical when we introduce something to them which needs some kind of investment. That's because nowadays, people can't be trusted, especially with money matters. Now, I am not asking you to pretend to be his friend. Be a genuine one, and try to understand him and let him understand you too. When the relationship has been established, it will be easier to talk things out.