How do I sell SEO services to local businesses in India

You have to tell them about the SEO and make them understand what is SEO and what services will you provide and how you plan the strategy to rank good in search engine ranking. You have to tell full strategy what you will do and how you will do to rank good in Search engine result page. You have to tell how much time it takes to rank good in Search engine result page. You can also tell how you will do the local business listing. SEO is a long process which takes time. Search engines are updating their rankings algorithm a few times each year.
(Source: https://www.quora.com/How-do-I-sell-SEO-services-to-local-businesses-in-India)