sir, one more thing i would like to ask is that i want lower birth because i am suffering from kienbock disease...i.e. my right hand wrist does not work properly..my right hand seems normal but neither i can twist it nor i can put any kiond of pressure on it...i cant climb on upper birth but it doesnt come under handicapped...so is there any other way thru which i can show my medical reports to reservation manager and ask for lower birth in chennai rajdhani.?