I am from Himachal and I will be visiting New Delhi with my family. We have never used a taxi service before only the ones which are available on the road or by tour operators, but I understand that these places charge a lot in Delhi. As we would be traveling by taxi in Delhi, I would like to know how to book a cab? Is there an app, or can we call a cab company? Please provide details information and also suggest some cab companies who are good.