A teleporter that will converse with you and send you where you request to go

From NWNWiki

Place waypoints in the location you want to jump to and make sure you give each one a Unique TAG, these will be your destination waypoints.

Create the conversation with a list of where to go, something like this.

[OWNER] - "Where would you like to go?"
..[PC] - "K-Mart"
..[PC] - "Wal-Mart"
..[PC] - "Five and Dime"
..[PC] - "Hollywood"

Then for the each possible selection, place a "Action Taken" script like this;

void main()
{
    object oPC = GetPCSpeaker();
    object oJumpTo = GetObjectByTag("WAYPOINT_TAG");
    AssignCommand(oPC,JumpToObject(oJumpTo));
}

Changeing "WAYPOINT_TAG" to the tag of your destination waypoint for that selection.

Open the portal propeties and under the scripts tab, place this script in the OnUsed node.

void main()
{
    object oPC = GetLastUsedBy();
    ActionStartConversation(oPC);
}

Now click the "Advanced" tab and click the drop down menu next to the "Conversation" box and select the convo you just created.

Done.