How can I upgrade to First Class?

Hint 1 of 14:

You're not going to be lucky enough to find a free upgrade certificate to
first class.

Hint 2 of 14:

The only way to get an upgrade is to go through Marsinta.

Hint 3 of 14:

She sure has an attitude problem.

Hint 4 of 14:

Maybe you could fix it.

Hint 5 of 14:

She is just a robot, after all -- there are probably controls somewhere that
you could adjust.

Hint 6 of 14:

Look in the Sculpture Room (which you can only access once you're in Second
Class).  See what you find there.

Hint 7 of 14:

Do the shapes of the sculptures look at all familiar?

Hint 8 of 14:

They look kind of like the bots on the ship.

Hint 9 of 14:

In fact, one of them looks a bit like Marsinta.

Hint 10 of 14:

That's the third bot to your right after you've entered the room.

Hint 11 of 14:

Take a look at the dials on the left of your screen that appear when you
approach the sculpture.  They look a lot like the dials that appear when
you're talking to the bots.