SF / Expresses operated for huge profit from middle class people.If long distance passengers are not possible from Tamilnadu HQs Chennai and Kerala HQs Thiruvananthapuram for the poor people of these states ,then IR should ask to convert so many Long distance loss making (heavily subsidised less passenger fares) , passenger trains should be converted to THE HIGHLY PROFITABLE HIGHER FARES of SF / eXPRESSES.