Be as vague or specific as you like. Think something that'd encourage a conversation or a response at some point :P
Most Helpful Guy
Try to reminds them where you met. Here's an example of what happened to me. (A little back story - I met this really cute chick at costco. She was a vendor for a beauty supply company. I started talking to her and got her number).
Me: (I texted first) "Hey is this Caroline?"
Caroline: Yes, who is this?
Me: We met at the most romantic place in the entire world. Costco.
Caroline: Jajajaja, hey hows it going?
Then we texted back and forth for a while.
Moral of the story; Don't be afraid to put yourself out there.1THIS IS NOT RELEVANT ANYMORE