In case you don't have a juicer, you can use blender\mixture in order to extract the juice from the fruits, however you need to use a filter to separate the pulp from the juice.
If you add the ice cubes while serving the concentration of the Lassi will chance, so I have added during blending.
It is best to make the Cardamom Power at home, however separate the un-crushed outer shell of the Cardamoms from the powder.