Thankfully Madoka is used enough to dealing with awkward people, so she doesn't seem to mind it in the slightest. Instead she just smiles at his introduction, happy to be able to place a name to that face.

"Yoite-san, then!" She's a polite girl, after all. "I'll leave you alone for now so you can have some time to think about everything.. But if you get hungry later, please look for me! I can show you where all the yummy stuff is in the kitchen."

Clearly that's a very, very important part of anyone's stay on this train.