More companies should do this

Recently I called Southwest to make a change to a flight on an upcoming trip (yes, another vacation. Life is HARD). When I called, I got the usual "your estimated wait time is X minutes" message. However, what happened next was great. You have the option for them to call you back when a rep is available. No more being on hold with stupid hold music? Yes, please! You put in your phone number, record your name, and boom, it's done. More companies should do this. I don't know what it costs, but from a customer satisfaction standpoint, it's a home run.