CHENNAI, July 29: The Southern Railway has written to the Prime Minister's Office (PMO) requesting a suitable date for the inauguration of the Chepauk-Thiru Mayilai section of the Mass Rapid Transit System in the city. An earlier plan to do so on April 14 this year had to be cancelled owing to the political situation at Delhi. The PM is likely to visit the city in August when he would flag off the MRTS. Meanwhile, construction work in the stations on this line are yet to be completed though the basic facilities such as toilets, ticket counters and rest sheds have been provided.