Hey who was that
from a 7572 phone number, Sunday, September 6, 9:45 PM

Hey
from a 757 phone number, Sunday, September 6, 9:53 PM

Hey u done if u r call me
from a 757 phone number, Sunday, September 6, 10:09 PM

In the interest of saving characters, I should note that you don't have to open every text message with the word "hey." Sometimes you can just get right to the point. And with those extra three characters, you might even have space to include punctuation.