Your route .
Paris — 3 nights stay
Arrive in Paris airport. Get transferred to your hotel..
Jardin du Luxembourg.
Train ride to Nice
Nice — 3 nights stay
Checkout of your hotel. Take your train from Paris to Nice. Check-in to your new hotel.
Basilica of Notre Dame de Nice.
Take your flight back to India. Hope you end up with a lot of memories and a few souvenirs too..