Can no1 help me???

I have posted this question twice and even with multiple advice, it has not helped.

How do i make ai move between random points(I have this working), but have them move there and not teleport. O have tried lerp and nothing. Help please!!

Script(mainly handling the ai move under if (waypointtimer <= 0):

 public class AIBehaviour : MonoBehaviour
 {
 
     public NavMeshAgent agent;
     public Transform player;
     private float DAI;
     bool PlayerSeen;
     float movespeed;
     float timer = 5;
     private Vector3 newPos;
     public int moveCount;
     public bool AImove;
     Animator anim;
     bool AIpatrol;
     float AIhealth;
     Vector3 randomPos;
     float waypointtimer = 5;
     GameObject prefab;
     GameObject Waypoint;
 
 
 
     // Use this for initialization
     void Start()
     {
         PlayerSeen = false;
         movespeed = 1;
         moveCount = 0;
         AImove = false;
         anim = GetComponentInChildren<Animator>();
         AIhealth = 100;
         newPos = transform.position;
         prefab = Resources.Load("Waypoint") as GameObject;
     }
     // Update is called once per frame
     void Update()
     {
 
         timer -= Time.deltaTime;
 
         var aix = new Vector3(Random.Range(0, 20), 0, Random.Range(0, 20));
 
         Waypoint = Instantiate(prefab, aix, Quaternion.identity) as GameObject;
 
         if (timer < 0)
         {
             timer = 5;
         }
 
         waypointtimer -= Time.deltaTime;
 
         Vector3 positionA = new Vector3(Random.Range(0, 50), 0, Random.Range(0, 20));
         if (waypointtimer <= 0)
         {
             newPos = positionA;
             Vector3 positionB = new Vector3(Random.Range(0, 50), 0, Random.Range(0, 20));
             transform.position = Vector3.Lerp(positionA, positionB, Time.deltaTime * movespeed);
             waypointtimer = 20;
         }
 
         Vector3 direction = player.position - this.transform.position;
         float angle = Vector3.Angle(direction, this.transform.forward);
         float angleb = -Vector3.Angle(direction, this.transform.forward);
 
         if (Vector3.Distance(player.position, this.transform.position) < 10 && angle < 30 || (Vector3.Distance(player.position, this.transform.position) < 4 && angleb < 0))
         {
             PlayerSeen = true;
         }
 
 
         /* if (PlayerSeen == false)
            {
              transform.position = new Vector3(aix, 0.0f, aiz) * (movespeed);
             moveCount += 1;
            anim.SetBool("Take 001", AIpatrol);
             randomPos = transform.position;
            }
       }
        else
        {
 
            if (Vector3.Distance(player.position, this.transform.position) < 10 && angle < 30 || (Vector3.Distance(player.position, this.transform.position) < 4 && angleb < 0))
            {
              / direction.y = 0;
 
                this.transform.rotation = Quaternion.Slerp(this.transform.rotation,
                                                            Quaternion.LookRotation(direction), 0.1f);
 
                if (direction.magnitude > 5)
                {
                    this.transform.Translate(0, 0, 0.3f);
                }
            }
            *
            */
         { 
             if (moveCount == 2)
             {
                 AImove = true;
             }
 
             if (moveCount == 2)
             {
                 AImove = false;
             }
 
             if (Vector3.Distance(player.position, this.transform.position) > 10 || (Vector3.Distance(player.position, this.transform.position) > 4))
             {
                 PlayerSeen = false;
             }
 
         }
     }
 }