Tell the person to come in
From Create Your Own Story
"Come in" You yell.
In walks Caitlyn, she is a short athletic student in your class with long auburn brown hair and penetrating blue eyes.
"Hi Caitlyn, how can I help you?"
"Hi professor, I am sorry for stopping by so late, but I had a few anatomy questions I was hoping to ask you about before our upcoming exam? Is now a good time?"
"Of course." You beckon Caitlyn to take a seat by your desk.
"What questions did you have for me?"
"Well, I don't understand what the Cremasteric reflex is?"