Kevin
"No, I did! Check in, I mean." Dimi inches down the slope, holding his hand outstretched for the stranger—Samu?—to grab. "But it wasn't much of a conversation. I flew here on my own, and the rest of the Four is still in Sinnoh, so I just, ah... Didn't really talk to anyone? I'm usually a lot more sociable, I think! Just adjusting!"

He'd mostly just confined himself to his room in the beginning, spending enough time there to eat, sleep, and call Arlow. Clingy? Maybe, but Dimi's always known that about himself. "I've got disinfectant if you need it!" He yells down. "Y'know, if you scratched your face? If you need it!"
Sarah
"Thanks!" He took the hand and got himself up. "There's lots of people here from different regions! I think findin' new buddies is exciting!" He had met a couple himself as well as his fellow league members. "I'm great! No worries about it, can't feel half my face much anyway!!" Once he got up there with Riolu, it was clear that half of his face was covered in scars; they were healed, but it made one side of his face look like a different person. 

"So, what's your name? I dunno if ya mentioned it yet or not!" He cupped his hand over his ear and leaned in. "Also, where are ya from? Ya might be from one of those big known regions! Heh, I'd fall over if someone knew mine!" No need to wish, Samu. A small rock next to his crutch sent him stumbling a bit.
Kevin
Dimi valiantly does not wince when he sees the man's face. Obviously he's fine with... Um, whatever happened, or at least the outcome, so there's no reason to be weird about it. After shifting part of his worldview in a matter of seconds, Dimi answers.

"I'm Dimitri al-Amin, from Sinnoh? You should tell me the name of your region anyway." Salamence snuffles from under her wing, where she basks in the sun. "Maybe we've flown over at some point! And your name, too. No need to stay strangers!" He beams, the apples of his cheeks nudging up his glasses. "Pleased to meet you!"