@ForRedSharkbut it's blokes I am dating remember, so it's definitely not only women who can do this.
I think what helps is that I am 47, so have a degree of self-assurance (counselling helped hugely with this), so I feel confident to state what I am looking for from OLD early doors, which is actual dates!
(The discussion upthread shows that many people, male and female, are happy to have matches that remain on+like friends, and there is absolutely nothing wrong with that, but at this point in my life that's not of any interest to me).
So in the first few messages I say that I am only really interested in pursuing it if they want to meet up soon. (I say this respectfully obviously - I am far from Boundaries Ice Queen I might be presenting myself as here!)
And some blokes challenge this, or just block me at that point, and that's absolutely fine. I am not particularly rejection-sensitive at this point. I would rather know, than waste my time.
It doesn't always work out though. I had one recently, Mr Builder, who agreed a date about 10 days in advance, happily chatted away to me, then cancelled the date that morning. There is no way I can really prevent that happening - it's just one of those things.