Actually reservation for the train ihas opened only for dec 1 onwards.thats the main reason for poor response.And even if the ype exp via salem gets maq people will find hard to get tickets especially during weekends as ppl book tkt in the this train months in advace as its the only train from clt.If its extended to mlore i dont think ppl will prefer booking tkt 1 or 2 monts in advance as they have lots of busses and also a train with better timing and also the train will run almost empty between clt and maq