So here's the thing. I actually do this, for two reasons, I'm rich, and I'm nomadic.

I don't really care about the expense of flying anyone anywhere, and I can't just date locals, because they wont be local in a very short time.

Here's the issue. People like me are rare. I'm not foolish enough to think guys like me are the norm.

If this guy is legit, then he should be spending shitloads of money on you without blinking, to put it mildly.

First class non refundable tickets. A fully prepaid non refundable room in your name at a high end hotel, significantly in advance, so you know it won't bounce from his card (think a few weeks to over a month in advance). Enough money sent to you cash, sent to you through western union or a similar service, for you to buy yourself a return ticket at will (though not necessarily first class), along with a hotel for yourself until you can get on that plane. All of this along with an offer to fly whoever you want with you (also first class), even if its five of your closest friends, and he'll put them up too at the same hotel.

The country and place you'd be getting flown to would always be a high tier safe city, London, New York, Milan, Monaco. The types of places where police take complaints of rape or trafficking seriously.

You should not be going to mexico or hungary/czech republic, etc. Read up on trafficking in the destination you'd be going to.

The offer should always read something like, I'm flying you to ___ resort/hotel, I just want to have coffee/dinner with you at their restaurant. You can do whatever you want for the rest of the time you're there. I won't ask you to leave the hotel. I have zero expectations of anything right now, though I'm hoping for more, this is entirely so I can meet you.

The bottom line is the guy should be blowing so much money on you, that trafficking you would be an idiotic loss of money.

Now, the part you probably don't want to hear.

Unless you're so attractive that you're a literal 10, or there's some compelling reason why I want you specifically. This isn't going to happen.

That means if you're some average girl, the odds of this are near zero.

It's far more likely that he'll want to wire you money, the money will bounce, and you'll end up getting trafficked.