Many search engine optimization world wary of Assistant sound what you can do to their profession in the long run, especially when it came to location-based search. Mobile search is already a strong minority of all use of the web. That figure will rise higher and higher voice Assistant will see wider use, means less people will find your business on search engines and, instead, have a voice Assistant to avoid the need to find anything.
Instruction sheet must tell customers how to use the site review Yelp! and Google Maps so they can leave a review of your business. You can also provide an incentive for them to leave the reviews by offering some kind of discount or freebie. Of course, if You know that many of your customers are unhappy, focus first on changing Your business processes and sends an instruction sheet for all customers (happy) your future. Whatever you do, no fake reviews.
For now, it's better to consolidate your reviews in the Google Maps and Yelp! because both are used by Siri and Google Maps alone can bring You traffic to your business. Sprinkle some reviews to other sites (Insiderpages, Yahoo, City Search, local, and Traders circle)for consistent online profile of your business.