[My query is about PNR 2739003532 for train 15035 UTR SAMPRK K EX]
CNF means confirmed.
it means your ticket is confirmed, and your seat number will be mentioned there.
CNF means your ticket is in a confirmed status. This happens when you were issued waiting/RAC ticket and later it got confirmed. In such cases, you will get your berth details at the time of chart preparation on the day of your journey; 3 to 4 hours before the departure time of train.