A suitcase? That part he completely missed about disappearing, only his face getting to express his bewilderment that inspires. But while he can't see much of her face, the drawn legs makes him consider his next words, or keep the subject light.

"Just another mystery of the train, huh? But hey, 'least we all can understand each other again, and we'll be able to get out and move around soon, right? There's a music car too, don't know if you've heard about that."

...well, he tried to look for positives, as measly as they might be right now. Adding lastly, as the thought pops up in his head.

"Got a book for your book club too. You said something 'bout that at the council, didn't you?"

Or is he misremembering. It's been forever since then.