Lowe's, as with every do-it-yourself hardware store, supplies the materials one needs to get projects done in and around the home. If you're looking for someone to do it for you, you need to hire a contractor who specializes in the project you need done.
Though, as with most companies, Lowe's tries to hire and train qualified personnel, not everyone there is as knowledgeable about every department as you might hope, but this is a great opportunity for self-growth and awareness and learn somethings on your own.
Patience is the key if you need questions answered as there are more people wanting info than qualified employees to give it.
You'll find this the same at Home Depot as well.
Personally, having worked in both Handyman and Builder's Emporium in CA, I like both stores.