Dahlia Lounge is a great place to take a business associate, client, or partner for lunch. It's classy, the food is excellent, the service attentive, and best of all you can ignore the fancy-dancin' prices that you'd otherwise have to fork over from your own wallet.
I went there last week and had the crab-cakes, which were delicious. They price them as $15/one or $25/two which I thought was overpriced until I remembered, yup, it's a business lunch. They had a great chowder soup which was also yummy. For desert I had the cocunut cream pie which I shouldn't have done at 1pm with an afternoon of work ahead of me, but I highly recommend that as well.
This restaurant gets a lot of press and is widely reviewed, and really you can't go wrong here. If you're a foodie in Seattle, you really must go to Dahlia, it's "on the list". If you want to impress a work associate and take them somewhere nice, this is a perfect place.