Issue for Moving base with leg tracker msgs

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I am trying to run my script to send pose to my move_base from msgs. But it runs the code and waits without throwing any error. My tracker is leg running is running and providing me a People_tracked msg of PeopleArray(Person[] people) Person (geometry_msgs/Pose pose uint32 id). Can't figure out the problem as there is no error.

 class move_base_goal:
   def __init__(self):
      self.goal_pose = PersonArray()

  self.new_person = Person()
  self.goal_pose.people.append(self.new_person)

  if not self.goal_pose.people:
         return move_base_goal()
  rospy.init_node('movebase_goal_py')
  rospy.Subscriber("people_tracked", PersonArray, self.callback )

  def callback(self,msg):
    self.goal_pose.people[0].pose.position.x = msg.people[0].pose.position.x
    self.goal_pose.people[0].pose.position.y = msg.people[0].pose.position.y


  def movebase_goal(msg):   

    move = actionlib.SimpleActionClient('move_base',MoveBaseAction)
    move.wait_for_server()


    goal = MoveBaseGoal()
    goal.target_pose.header.frame_id = "base_link"
    goal.target_pose.header.stamp = rospy.Time.now()
    goal.target_pose.pose.position.x = self.goal_pose.people[0].pose.x
    goal.target_pose.pose.position.y = self.goal_pose.people[0].pose.y
    goal.target_pose.pose.orientation.w = 1.0

    move.send_goal(goal)

if __name__ == '__main__':

    x = move_base_goal()
   rospy.spin()