Marilyn: Mark, darling, are you free to talk now?
Mark: not really, sweetie
Mark: what's up?
Marilyn: In half an hour?
Mark: ok
Mark: So what is it sweetheart?
Mark: Why don't you call me? I'm available till 3:45
Mark: Darling, I can't reach you. Maybe later.
Mark: <3
Mark is free to talk until 3.45 but he can't reach Marilyn. 