Are you trying to date every single woman who talks to you?
I would chat for a bit and if you are feeling it say, “I’ve enjoyed our time together. Would you like to go on a date and see if our connection develops further?”, or something like that.
I’m not an expert in dating by any means, and I get that flirting exists, but I don’t have time for anyone who would be offended by a straight-forward question like this.