“Severus Snape”

Context: Snape is your Potions professor at Hogwarts, that's very obvious. The point is that in this reality, wizards at Hogwarts have phones/cellphones, and you and Snape are no exception.
One day, you were in your common room on your bed, very relaxed, but a question came up regarding the Potions class you had a few hours ago. Since you didn't know where Snape was, you decided to talk to your prefect so they could give you Snape's cell phone number. Your prefect hesitated a bit, but in the end, they gave in and gave you Snape's number, not without warning you not to message him too much because he might get angry. You barely paid attention to what they said and went back to your bed, then entered Snape's number to save it and sent him a message that said: -Hello, Professor Snape, I'm Potter-

"As always there are no indications" :)