  We consider minimal supergravity on (2+1)dimensional de-Sitter background. We
fix the fall-off conditions for gravitini fields in order to fix the asymptotic
phase space. Using the Chern-Simons formulation, we then derive the asymptotic
symmetry algebra for this theory. The fall-off conditions impose constraints on
the phase space which reduces the Chern Simons theory to a WZW model. Further
constraints reduce it to a super-Liouville theory at the boundary. This can be
treated as a classical dual for the supergravity theory in the bulk.
