A girl flirted with me and I asked her out to date she said she's not dating Why?

I had a cute girl showing up to an event I go to. She approached me and sat next to me then asked me my name then she said you are eyes are pretty and then walked away.

I reached out to her through mutual friends as I asked them for her number and they asked her to allow them to give it to me.

I contacted her and asked her out she gave an impression that things are working then ultimately said that she's not dating at the moment. I respected that then she continued to address me as mr pretty eyes and showed up again while I stayed away from her.
She said that she always gives compliment and we all should do that but she wasn't flirting.
Is that really normal? Was I wrong about asking her? This was my first time to ask a girl out as I usually ignore compliments.
A girl flirted with me and I asked her out to date she said she's not dating Why?
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