When we first adopted Holly, I called Pacific Assistance Dogs to see if there was some sort of training we could both undertake to guide Holly into the role of a therapy dog. They explained that it was not their mandate to do so, which is understandable.
However, that didn't preclude my working with Holly to teach her to do some of the things I might require assistance with; like fetching the phone and taking off my socks. She even knows how to put them into the laundry basket! I only wish I could teach her to take those wet, cumbersome items out of the washer!