i avoid boring them in a few different ways, like whenever i am making delivering a DHV spike i touch their arm in a casual way while having eye contact and a smile. Subconsciously they wont want to break that connection so theyll pay attention and even start interacting. this is enough to keep most girls interested especially if you have a funny/interesting story. Girls will respond to a good energy, eye contact, and kino.

On to the second problem, girls will flake because after you leave, that emotional connection is severed and she will realise that youre just another guy in her life. so instead of going for the number, go for the date right there and then, say what youre doing the next day and tell her that she should tag along. then what i like to do is i like to get the number, then dial it right infront of her and start talking on the phone to her when she can still see me. Then i turn around and walk off while still being on the phone with her. That way the she can feel the emotional connection even when she cant see you and the first phone call is out of the way so you can call her again easier.

`Feather

Be more interesting.

Example:

Me: What do you do?
Her: I work in IT
Me: Come on, you're lying. Where are you glasses with the tape on them, and the little pocket protector? Actually, you're not even wearing a button up shirt. You're not in IT? What do you really do? Are you a globe trotting spy?
Her: Some stupid answer trying to convince me she is in IT
Me: No, it's impossible, you must be a man.
Her: Some other answer.
Me: That reminds me of funny guy I knew who worked in IT. [I then go on to tell a story about a guy who mixed up a girl telling her that she used to be a man as he heard that she was from Iran (stolen from the IT Crowd).
Her: Laughing and looking at me with those sheep eyes

I also like Feather's answer. I also like to give the girl my phone and make her text herself something sexy. I say, "here, put your phone number in. Now send yourself a text from me." She'll write something stupid, like hi, then I'll say, "no, that's boring. Write something about how hot you think you are." Then when you follow up you can make fun of her for being so conceded.

Write it on your hand: Don't be boring.

Or even better, write something on your hand like cookies, really big, then scratch your face, or whatever, so she notices. Then when she asks about it make up a story on the spot.

Asking her if you're being interesting is validation seeking.

Also, on your other comment, I wouldn't compliment her. Why would you?