Question: What's the service number of the Jammu Duronto train? 
SQL: SELECT MAX("Service") FROM "1-23477312-1" WHERE "Train name" = 'Jammu Duronto';

Question: What's the name of the train to Madurai Junction?
SQL: SELECT "Train name" FROM "1-23477312-1" WHERE "Destination" = 'Madurai Junction';

Question: What's the service number of the Pune Duronto train that departures at 21:35?
SQL: SELECT "Service" FROM "1-23477312-1" WHERE "Train name" = 'Pune Duronto' AND "Departure" = '21:35';

Question: What's the name of the train that goes to Bhubaneswar?
SQL: SELECT "Train name" FROM "1-23477312-1" WHERE "Destination" = 'Bhubaneswar';