Considering the heavy rush during "Durga puja" season, the Northeast Frontier Railway (NFR) has introduced "Puja special" trains between Guwahati-Kolkata and also between Dibrugarh-Kolkata.According to a report in The Assam Tribune, two special trains will make round trips from Guwahati in Assam to Howrah in Kolkata. The service will be available once in a week from 10 October to 28 November.The