It's obvious he's a little lost, but Romeo smiles at him reassuringly. It's okay that he's a bit confused. It's always confusing on your first day in a new place!

"Of course sir! So you can press these buttons." He pointed to them with a smile. "This one lets you talk to everywhere so everyone can hear you! This one lets you chose which carriage so maybe you know your friend is in the kitchen, you could call just there to speak to them!"