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I work remotely for a company in the US and I'm traveling next week to meet with the team along with some teambuilding. After that I'll return to my home country in South America. The company paid for a round-trip ticket from South America to the US with a 1 week stay in CO. I have a B1/B2 visa.
However, I'd like to do some tourism as well. Would it be safe to "miss" my flight home and instead fly to SFO or NYC and stay for an extra week? I'd buy another ticket to fly back home a week later. I have no intention whatsoever of overstaying of course.
I'm worried about immigration thinking I'm trying to overstay by missing my flight on purpose. Is my worry justified? Should I play it safe and just return in my original flight?