I have a 2016 Honda Accord with an automatic transmission, my issue is that it is hard to shift from Park to Drive sometimes?

I have a 2016 Honda Accord with an automatic transmission, my issue is that it is hard to shift from Park to Drive sometimes?
Added (1). Also, I took it to the dealer and they changed the transmission fluid. So should I wait a little while until it smooths out, it still feels a little rough. Thanks Guys.
(My car has about 20,000 miles and is my daily local commuter car.
Added (2). Sorry forgot to add, if anyone was confused, it was a transmission fluid change not a flush, just to make sure.

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