OOP how to make such a block diagram?

Question

OOP

I sketched a couple of examples, now I would like to see the considerations of other people.
You need to create an object interaction scheme for the following processes:

• A man visits a restaurant where he needs to order dinner. The restaurant is filled with other people.
  
• The ship transports people from one coast to another.
  

If you are interested in spending time on this, I will be glad to see your options :) Also, commenting on your actions is welcome.

Answer 1

It is not clear what kind of "block diagram" or "object interaction diagram" you need. A flowchart implies actions, instructions, an algorithm. The interaction of objects is another thing. Are you familiar with uml?
How do you imagine the subject area of ​​both points? Describe it first.