Answer: My verbal style with children would use simpler words and a more friendly, caring voice. But with senior citizens i would use a more proper and pronounced way of talk along with words that matched their age group to make them feel like i acknowledge and respect them.
Explanation: In different age groups styles of communication are greatly different, and should be treated as such
I believe that making online purchases through smart speakers isn't a good idea. It would become very easy to steal credit card information if you are just yelling it into your devices. You also have the scenario were a kid or friend could jokingly order something.