Deductions & credits

Hi, I am trying to help my friend with his taxes.  Turbotax is INSISTING we complete 8889-T but we literally have no information whatsoever to complete 8889-T.  All we know is box 12 on his two W-2s adds up to $700.  We have no record of any background to this $700.  We do not even know who paid it or if it was spent or not.  How do we proceed?