Panel 1
Wagner: “I’ve learned to speak stadi [Helsinki] slang.”

Panel 2
Wagner (in stadi): “Hey, tram driver, close the door. There’s a cold breeze in here. Do you understand?”
Tram Driver: “?!”

Panel 3
Tram Driver (in Karelian dialect): “I don’t understand. I’m from Lappeenranta.”
Wagner: “I should have guessed.”

Translated by Living in FIN. Thanks to Comrade TP for the heads-up.