I will leave my seat for a moment.

I will leave my seat temporarily.

He sat in the cockpit and flew the plane.

This train is reserved seats only.

This train has unreserved seats.

In the train, the priority seat is for the elderly and pregnant women.

He sat in the defendant's seat.

I met new people at a shared table for lunch today.

Yesterday, I shared a table with my friend at a cafe.

We will swap seats in the class tomorrow.