This file is used to assign dialogue files to PNPCs in game . The dialogues consist of interactions with main character or between party members.
The first column indicates the name of NPC (death variable).
The second one assigns the DLG file with needed dialogues.

In PSTEE we have:

2DA V1.0
NONE
            FILE
ANNAH       BANNAH
DAKKON      NONE
GRACE       BGRACE
IGNUS       NONE
MORTE       BMORTE
NORDOM      BNORDOM
VHAILOR     BVHAILOR