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While I can find lots of examples of product sales datasets, finding datasets for customer satisfaction is much more difficult. All I've found so far are government customer satisfaction indexes, which doesn't sound like what you're looking for. The closest I've been able to find so far is this: Customer Survey Data | San Francisco International Airport
My best recommendation is to find a sales dataset that fits your needs and then add customer satisfaction ratings fields, which you can fill using one of the many data-generation tools that can be found on the internet.
Tableau comes with a sample sales dataset by default, "Superstore", that can be seen at the bottom of the window when opening a new instance of Tableau Desktop:
Also, you can find lots of sample datasets at data.world -- it's free to sign up, too.
Hope this helps!