You meet her at a coffee shop or the library and have a great interaction; she was laughing at all your jokes and she seemed excited about meeting up with you again. You leave feeling like you and her shared a connection and you are excited about the potential of meeting up again.
You shoot her a text a couple days later, asking her out for drinks. You glance at your phone a couple hours later, still no response. Eventually, you realize that she’s just another flakey number.