Toggles is right, of course
I have the exact same model dishwasher, and it also came without the faucet attachment.
However I was able to pick one up at a local Orchard Supply Hardware store for less than $10, as I recall. There are a couple of types, and as I recally you will want the larger type. You might want to take careful measurements of the female connector on the end of the hoses so that it matches up with the male connector you need to put on the faucet.