THis happens, especially with online dating
You really have to strike whilst the iron is hot as heart says. I rarely get girls to meet on the same day though. But for me..
Let's say you start talking at 6pm ad it's going well. I don't think it's wise to end it with in 2 messages "let's meet on Tue in 6 days" and then she will be there. It will flake more often that not doing it this way.
You have to devote your 1st afternoon going back and forth on the SPAM till the end of your night in the same night you get her number, you need a lot of investment. The other day I was doing well with an absolute hotty. But I had a fuck buddy over a 8pm and I don't tend to text other girls whilst in front of her so I had no choice but to let it get cold.
Next day, I text tinder girl and it faded away, I let the iron get cold.
With online game, you need a massive amount of back and forth's and be in her head till you meet up. I send them pics of my restaurant food saying "jealous?" And she will do the same back to me. You just become like a couple on an app essentially. Not talking about occupation, but just kinda bantering back and forth without actually getting to know each other, save that for the date.
This one lead to fucky fucky:
can you feel the synergy? She told me afterwards that she likes my style (have good pics) and my banter on the texts is what made her want to meet
A phone call could also help with you being on her mind instead of all the 10 other tinder guys in her chat inbox.