Ross: Hello, I got a question
Ross: Could sb cover for me on Mon?
Melania: I'd do that, but I have a full plate :(
Ross: Ok, I understand
Josh: At what time exactly?
Ross: 4-6 p.m.
Josh: Hmm I must check that in my schedule
Josh: But probably it will be possible
Ross needs someone to cover for him on Monday between 4 and 6 pm. Melania can't help him, Josh probably will.