UFO Sighting in Houston, Texas on 2017-07-28 17:10:00 - Saw saucer like object in the sky near convention center

I was sitting in my truck on the second level of the hilton parking garage making phone calls, when i noticed something reflective moving in a nnw direction high in altitude. i thought it could be a jet going to the airport, but it had no features. i watched it move from my pov from the south towards the north while i was facing the west, i watched until it passed behind a cloud. i saw no details, other than it was quite large and it was shiny- close to what i would guess was disk like- but i cant say for certain. i consider it a ufo for the reason- it had no features, it was very shiny, large and moved very fast.