Just give 10-digit pnr number and get the status.
Sample: {5 items
"pnr":"1234567890"
"journeyDetails":{8 items
"trainNumber":"22629"
"trainName":"DADAR TEN EXP"
"boardingDate":"2-5-2014"
"from":"DR"
"to":"KKW"
"reservedUpto":"KKW"
"boardingPoint":"DR"
"class":"SL"
}