Translate in the direction of a point?

Hey, Unity has a usefull Gamekit where you could add nodes ("Waypoints") to which your character should move. You can just add nodes if you want more waypoints or a pattern your character should move. In their tutorial they are using a platform but I think that makes no difference for your use.

To the GameKit

EDIT :

Or if you want only a script for your NPC to move between points you could use this script :

  using System.Collections;
  using System.Collections.Generic;
  using UnityEngine;
  public class MoveNPC : MonoBehaviour
  {
      public GameObject npc;
      public float moveSpeed;
      public Transform currentPoint;
      public Transform [] points;
      public int pointSelection;
 
 
      // Use this for initalization
      void Start()
      {
          currentPoint = points [pointSelection];
      }
 
      void Update()
      {
          npc.transform.position = Vector3.MoveTowards (npc.transform.position, currentPoint.position, Time.deltaTime * moveSpeed);
          if (npc.transform.position == currentPoint.position)
          {
              pointSelection++;
 
              if (pointSelection == points.Length)
              {
                      pointSelection = 0;
              }
 
              currentPoint = points[pointSelection];
          }
      }
 }

Now you just add childs to your NPC for each waypoint you want and add it to the points array.

Best regards, TheIcaruz