Johnson: Sorry I couldn't pick up, I was driving. Did you need something?
Rick: Just wanted to ask if you were home, got nothing to do..
Johnson: Ahahha Just came to the supermarket to get some stuff and will be home in about 30 minutes. 
Rick: Can I stop by?
Johnson: Sure bro! Show up in about 40 minutes ok? 
Rick: Cool, cya in a bit!
Johnson is in the supermarket and will be home in 30 minutes. Rick will visit him 10 minutes later.