I contacted the tour operator through their online website and choose a package which included traveling+food+stay at Shimla, Kullu, Manali, Khajiar, Dharmshala and Dalhouzee. The package was reliable as all this was included in a price range of Rs. 11, 000 for 5 days. They have their own bus which takes you these places. The tour operator sent three tourist guides cum care takers with us.
In Himachal you rarely need any tour guide as there is nothing so historical conception about any of these places, whatever there is, is there in front of your eyes.
The food and accommodation too was arranged at all these places in good hotels. There are also alot of other tour planners, which can provide you the same services at a comparatively cheaper price. Do verify before approaching anyone through their website. I did the same, approached them through website and later came to know that other tour planner are charging competitively lower then them.
But overall Trans Himalayan Explorations will fulfill ones desires of traveling the Himalyas a life time memory.