While Dante was walking toward the entrance he heard the announcement through the speakers which told that every student may come to the auditorium "Guess I'll have do this later" With these words, he put his letter into the inner pocket of his cloak and moved on to the entrance to get to the auditorium, where a lot of students already arrived. 
He moved through the crowd to get to the teacher. While he was doing so, he was very polite and always told "Excuse me" or "May I ..." and supported his words wiht a gently push so he could pass by more easily. When Dante was infront of the teacher he told with a friendly and confident smile "Name is Dante Winfield" "By this occasion, may I ask you something?" Dante didn't wait for a question, not because he was impolite but rather this simple thing was more important to him then others might suggest. He pulled out his letter again and showed it to the teacher, on the letter you could see his symbol. "Could you please tell me where I could post this letter of mine?"