How to make an SCNNode facing toward ARAnchor

How can I make an ARNode pointing to an ARAnchor?

I want to use art.scnassets/ship.scn showing in the center of the screen and pointing to the object I just placed somewhere in the scene.

/// ViewController Class
func placeObject() {
    let screenCentre : CGPoint = CGPoint(x: self.sceneView.bounds.midX, y: self.sceneView.bounds.midY)
    guard let hitTestResult = sceneView.hitTest(screenCentre, types: [.featurePoint]).first else { return }

    // Place an anchor for a virtual character.
    let anchor = ARAnchor(name: identifierString, transform: hitTestResult.worldTransform)
    sceneView.session.add(anchor: anchor)
    // add to item model
    ItemModel.shared.anchors.append((identifierString, anchor)

}

func showDirection(of object: ARAnchor) { // object: saved anchor

    if !Guide.shared.isExist {
        let startPoint = SCNVector3(0, 0 , -1)
        let targetPoint = SCNVector3(object.transform.columns.3.x, object.transform.columns.3.y, object.transform.columns.3.z)

        let guideNode = Guide.shared.setPosition(from: startPoint, to: targetPoint)

        // add the ship in the center of the view
        sceneView.pointOfView?.addChildNode(guideNode)

    }
}
/// Guide Class   
func setPosition(from start: SCNVector3, to target: SCNVector3) -> SCNNode {
    isExist = true
    guideNode.position = start
    targetPosition = target

    // create target node from saved anchor
    let desNode = SCNNode()
    desNode.position = targetPosition

    let lookAtConstraints = SCNLookAtConstraint(target: desNode)
    guideNode.constraints = [lookAtConstraints]

    return guideNode
}

// MARK: - ARSCNViewDelegate
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
    if let name = anchor.name, name.hasPrefix(identifierString) {
        // Create 3D Text
        let textNode: SCNNode = createNewBubbleParentNode(identifierString)
        node.addChildNode(textNode)
    }

}

I tried SCNLookAtConstraint but it does not work as expected, any suggestions?

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