cruise.JPG

I am trying to make a spreadsheet to help look at various travel options. Part of what I want to do is graph a timeline of events (do "a" for "x" days, and do "b" for "y" days). To do this, I need to make it work automatically based on two dates, then insert the appropriate a for x, b for y, etc.

Can anyone provide some help on getting this to work? I've attached a screenshot of the intended set-up. (PS - I realize I didn't match the data up in my example) Columns A through E need to generate the data in G and H.

Thanks in advance.