Moral dilemna!

What's up? Bored between classes here so decided to introduce myself.

So something has been bugging me for a while now . Here is what happened When I was done with school one day I headed out, I hadn't eaten lunch so I stopped in at this restaurant and picked this sandwitch from the menu and took it to a table and sat down when I was done I remembered I didn't pay!

Yeah evidently they were super busy and distracted because there was this manager/investor type looking around everywhere and talking to them. So I was just about to go up to the counter and say I hadn't paid but then I realized if I did that the owner guy might get mad at the employees. So I just left. What should I have done do you think?