  We have constructed a two dimensional theory dual to 3D asymptotically flat
Supergravity in presence of two supercharges with(out) internal $R-$symmetry.
The duals in both the cases are identified with chiral Wess-Zumino-Witten
models. Further gauging the theories, we show that the dual of the one without
$R-$symmetry is invariant under the well known ${\cal{N}}=2$ SuperBMS$_3$
introduced in Banerjee et.al. 1609.09210 , while for the one with $R-$symmetry,
the dual is invariant under the most generic, so far unknown, quantum
${\cal{N}}=2$ SuperBMS$_3$ symmetry. We have also commented on the phase space
description of the duals.
