This is why he's still pretty damn salty about the whole soul affair. You're not supposed to mess with things that you don't understand and all of this, the consequences, the conscious attempts to make peace with what he's forced to live with, all of that should've been thought of before the soul was ever put into his body.
Nothing he's willing to bring up now, of course, and not only because he can't read Jack's narrative.
"Glad to be of service." he snorts. "Sorry I can't do a similar tour for you. Unless you fancy London."
Can't exactly go to the end of Sunnydale when his memories of it are blurry recollections of a life he hasn't yet lived. London is the next best thing, the place where he was unmade and made anew. He's not even sure if this is a real offer or just casual small talk while he waits for the dream to pick up or fade away.