https://github.com/microsoft/powerbi-desktop-samples/blob/304c8ef9d72e039741159532c113e4eb8dc92493/Sample%20Reports/Sales%20%26%20Returns%20Sample%20v201912.pbix
and
https://github.com/microsoft/powerbi-desktop-samples/tree/304c8ef9d72e039741159532c113e4eb8dc92493/new-power-bi-service-samples
