This all makes sense. There's not much wrong, just a few minor grammatical and spelling mistakes: I am working on my August schedule and trying to set up agency calls so when I start on August 3 , [or "August 3rd", and "on" is optional (it's preferred in BrE, but I'm not sure about AmE), but "on August 3" is consistent with the style you used later. I wouldn't personally use a comma here, but it's not actually wrong to do so] I can go out and be productive.
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