pliss help me make Dreamy script

[jembo]

Hi, i'm currently playing on the Indonesian server.
I'm wondering how do you make a script for the level 80 instance dreamy field (Guardian of Eastern Magic Force Field).

Currently this is what I have:

LABEL(dreamy)
MOVETO(-114616,-151312,-6749)
NPCSEL(Guardian of Eastern Seal[ID=32658])
NPCDLG(Guardian of Eastern Seal[ID=32658])
DLGSEL(Masuk ke Eastern Magic Force Field)
DELAY(2430000)
CALL(dreamy)

The problem is that the dreamy field here is so congested sometimes I cannot teleport in. How do you get the script to retry when failed to teleport in? Thanks.