We all have important things to do back home. It is always for the best - at least for the person, and for their home world.

[He doesn't smile himself, now. He's been in the position enough times now to be able to see that most of the time people will try to cover up how hurt they were by someone going home. He wants to help Luke feel better, but he wants to make sure he handles this sensitively.]

But that can only make less hard to a certain amount for those left behind. I know it's... gotta be rough.