12382 is cancelled today. Tomorrow it would depart as usual.
It's your bad luck that train got cancelled on your travel date. You have one option, still 1 seat is available in 3A and 2 seat in 2A for today's departure of 12398. You can book it and it has been rescheduled to tomorrow's morning 5:00 and it seems that it would depart around 8-9 in the morning as 12397 has still not reached Allahabad.
12397: Sunday Departure: Crossed KCN/Karchana @ 17:16 21h 41m late