Hey binita Amsterdam flights from Mumbai costs around 25k (one way) For stay it cost from 4.5k at Amsterdam and 5.8k at giethoorn Do visit canal cruise and museums surrounded in it.For shopping try Albert Cyup market. Consider travel packages too, if it leads your budget stick to the package plan.
You could plan a day trip to Githoorn from Amsterdam. There are many websites which have these trips available. One day trip from Amsterdam will cost you around Rs. 7,000. You could alternatively go to Zaanse Schaans. It is almost equally pretty as Githoorn and will cost you nothing since you can reach there using the local transport system (we used a travel card for the public transport) Things to do in Amsterdam:
-Heineken Factory tour (if you like beer): Rs. 1,500 per person approx
-Red Light District: Free
-A'DAM lookout: Rs. 1,500 per person approx
-City Canal cruise: Rs. 1,000 per person approx
-Van Gogh museum (if an art connoisseur): Rs. 1,500 per person approx Amsterdam is a lovely city with canals on almost every street - just walk around Dam Square and enjoy the vibe. You'll also be able to try the local delicacies - must have the Stroopwaffle!! Link