Dear Aish
There are two parts to your question
1. Is idea patentable?
No ideas cannot be patented. But, you can work on your idea to give it concrete existence and then file a patent.
2. It is a business idea
Business methods are not patentable under section 3(k) 0f the Indian patent Act, 1970. However you can try you luck at USPTO where " anything under the sun that is made by man" is patentable
Good luck!