Hello Yosepgr,
If both are your potential clients, but you wanted to make an offer for wedding venue owners, you can specify that within the page content like many other sites do. For example, some site has "agency discount", "student discount" etc.
You can also do long-tail keyword research to find if there are any keywords might indicate they're wedding venue owners, so you can create content or articles to target these long tail keywords.
You can't tell who are the people searching for a term or phrase, not like Facebook Ads. You can only take an educated guess.
Hope this answered your question.
Regards,
Joseph Yap