If date in column A matches reference date, display data 3,5 & 10 days after

So, on attached spreadsheet I have a list of dates in col A, with price in B. In col G, I have specific dates. In H,I,J,K i have specific dates that I would like to see prices also. I have highlighted what I would like end result to look like.

I would like to have the ability to enter different data in A.B & G and have it show 3,5, & 10 days after.

thank you,