Need to train Siri but don’t know how to

I live in a town called Ojai. Using dictation on my phone or iPad, Siri nearly always interprets Ojai to be Ohio. This happens to other people too because their Texts or emails to me often say Ohio when the meaning is Ojai. There is no Blue underline because Siri thinks it has been done correctly. Often it immediately writes Ojai and then changes the text to Ohio Is there a way to train Siri to write Ojai instead of Ohio? Thanks