The context of the following conversation is Casey gave Austin an indication of Austin's progress in learning the material after a short quiz.:
Casey says I've been using these quizzes as a way of seeing progress in learning..
The friend responds How did Austin get along?..
Casey responds It looks as if he did pretty well, but we better review semicolons..
The friend responds Ah yes, those are always a bit tricky at first. What was the rule again?.
Casey responds To make two sentences into one without using a conjunction, place a semicolon after the first sentence..
The friend responds That's the one..