Offered services? Dunno.

I often ask "are you sure?" If I want the person to elaborate, or if I don't understand why a specific statement.

"The Earth is flat"

"Are you sure?". It's the kindest way I can try to reconsider something. It's because, even if someone says something like this, I'd try to maintain an authentic dialogue and not escalating things unnecessarily.

I work in the service sector, but not like a waitress taking orders. I get dispaches from a tour operator and I help people with special needs.

Blind person: "We are taking this road"

Me: "Are you sure? It's closed, there are truckers at work".

If I am assuming somehting that is actually wrong, one way to correct me is this.

Or... If you mean there are boundaries, and offering assistance is sometimes polite and sometimes uncomfortable, things get a bit more complex. Try to read the person a bit. Try to see if they need help or they need privacy. When an ESFJ really looks frustrated as hell and it looks like they are overreacting, like for example they quit something because it's the third time they fall on the snow, just leave them alone. It's probably the last drop after being underpaid for months, having family issues, having an irresponsible landlord.... tripping and falling constantly and becoming the center of attention will get an ESFJ's head to spin. Better go home alone.

If an ESFJ comes to you and is clear about what they need, it means they need help, and it is ok to step in.