Overall
I'm new to this site, but I've learnt very quickly that the range of abilities here is huge. Some will understand your photographic point immediately, while others just look for standard shots and criticise everything they don't understand.
The challenge called for "office art", a title which can range from anything found in offices through anything appropriate to hang in offices. Here, I believe that your shot captures some of the melancholy of evening work. Besides that, I don't think that there's anything really interesting here.
Artistic
The tonal palate used is narrow. You could have upped the saturation on the lower left-hand reds somewhat, and maybe brightened the top left-hand blues. The clouds don't appear menacing and are a touch soft.
Compositionally, you're trying to contrast the whispy left clouds with the more dramatic right ones. Perhaps you felt that the inclusion of the lights would provide some feeling of scale.
Personally, I'm not really into clouds, so, part of this critique reflects my own prejudices more than anything else. I find the image lacking in real drama, brought about by a dullness of colour and somewhat staid composition. If you had waited for a better timing, when the clouds were more interesting, the overall effect would have been better.
I don't know if I see a connection to the challenge here with the possible exception of the lights looking like something one would find in a professional building's parking lot. I realize some people took the topic as things you'd find hanging in an office but I disagree, so if that's what you were going with we have an interpretation difference here.
As far as the actual photo goes... I don't know... the 'night falling' part is fairly obvious, but the sky is so washed out that it's kinda unattractive. More colour, or more interesting cloud formations, might have been nicer. Having the streetlamp over in the corner is, however, a good touch.