Try if you like, but normal conversations cannot go on between a teacher and student in front of the whole class. This is what that “conversation” looks like from the perspective of the student: “Oh, you ask all the questions and I just answer them as minimally as possible.”
These kinds of conversations, while perhaps good for checking if student can reproduce grammar, tend to teach bad conversational habits. For example, relying on others to produce answers, speaking in unclear tones, not making eye contact, or just generally responding dismally.
More importantly, they teach students that they don’t have to invest themselves in the conversation and that they have no responsibility to maintain the conversation or to be a polite speaker.
These lessons have to be taught with special emphasis that we don’t have time for in the regular class. And they need to be practiced with real conversations between students.
Teach the grammar and the structure of the language in the typical class. Conversations need to be taught in a communication setting.