The longer story
You do not need a technical background for this conversation. Start by asking what they already use and what their friends use, because the answer is often further along than parents expect. From there, three ideas carry most of the weight. AI predicts likely answers rather than knowing facts, so it can be wrong with complete confidence. Anything typed into it may be stored, so personal details are best kept out. Images, voices and video can now be generated convincingly, so seeing is no longer believing. Keeping the tone curious rather than alarmed makes it far more likely they will come back to you when something goes wrong.