Actual game messages...

It is much more efficient to talk to yourself in person than via the
chat system.

It's not a good idea to place a Marines in a Small Secure Container.
The Marines will br destroyed.

You haven't accepted the mission yet, so there's no point in going
there.

You can't do that with a moon.

You are unable to put anything in the cargo container because it is imploding.

You can't fly your active ship into someone else's hangar. If you have another ship then activate the other ship, and try again. If you do not have another ship then get one and activate that ship and try again.