1 //---Tables--------

    1-users['name' , 'avatar' , .......],
    2-messages ['id' , 'body' , 'from_user' , 'to_user' , 'created_at' , 'updated_at'],
    3-conversations ['id' , 'first_user' , 'second_user' , 'date_of_last_message'],
    
2 // ----------Relations---------
 
**User Model ::
       public function messages()
    {
        return $this->hasMany(Message::Class);
    }
    
**Convesation Model
         public function messages()
    {
        return $this->hasMany(Message::Class);
    }  

      public function fiirst_user()
  {
  	return $this->belongsTo('App\User','first_user');
  }

  public function seecond_user()
  {
  	return $this->belongsTo('App\User','second_user');
  }
  
**Message Model ::

  
   protected $fillable = array('statu');
    public function user()
  {
  	return $this->belongsTo('App\User');
  }

  public function froom_user()
  {
  	return $this->belongsTo('App\User','from_user');
  }

  public function too_user()
  {
  	return $this->belongsTo('App\User','to_user');
  }