  We extend the Mellin space techniques of [1] for computing holographic
four-point correlation functions in maximally superconformal theories to
theories with only eight Poincar\'e supercharges. The one-half BPS operators in
these correlators are taken to be the superconformal primary in the
$\mathcal{D}[k]$ multiplet (with $k=2$ corresponding to the flavor current
multiplet), and transform in the adjoint representation of a flavor group $G$.
Because of the smaller R-symmetry group $SU(2)$, each individual superconformal
Ward identity is less powerful. On the other hand, the constraining power is
compensated in number by the different flavor channels in the four-point
function. As concrete test cases, we study the Seiberg theories in five
dimensions and E-string theory in six dimensions at the large $N$ limit. We
show that the flavor current multiplet four-point functions are fixed by
superconformal symmetry up to two free parameters, which are proportional to
the squared OPE coefficients for the flavor current multiplet and the stress
tensor multiplet.
