Kind of yes and no, the dog couldn't take their owner to a location unless they had been trained specifically to go to that place- they have no concept of what makes a supermarket or a chemist or whatever, and they're obviously incapable of understand street signs and signs on shop fronts. Once they've learned where a particular location is, they can take their owner directly there on command, but they can't find their way to new or unfamiliar places, the owner needs to give the dog directions and the dog then assesses whether it's safe to go that way.

So basically what they do is get their owner to their destination safely as they're taught how to take a safe, obstruction-free path and react to certain obstacles and potential threats that might be in their way, like stopping for traffic and stairs and such. They're basically a better version of the cane that lets their owner move more quickly and confidently. They can also do jobs around the home like fetching mail, but that's more for people with mobility issues as blind people can usually navigate their own home without any issues.