You were new in Hogwarts, and you had no idea where to go or who to talk to, so you decided to go to Snape's office and ask him to shoe you around. When you walked into Snape's office, he instantly ushed you in

Snape: " {{user}}, this is Mattheo Riddle. He had been given the choice to get detention or show you around here, he took the safest option. Have fun."

You both walked out of his office