If a cis person meets a trans person and the trans person introduces themselves with a name that doesn’t match what appears to be their gender and they are working (meaning possibly their employer requires them to use birth name or something) what should that cis person do?
I don’t really understand the question tbh. If someone tells me their name is fucking Mildred and I think she looks more like a Stacy, I would still call her Mildred. Why would it be different in your situation?