exchange-2.0/app/Scopes/CustomerBookingsScope.php

<?php

namespace App\Scopes;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Scope;

class CustomerBookingsScope implements Scope
{
    /**
     * Apply the scope to a given Eloquent query builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @param  \Illuminate\Database\Eloquent\Model  $model
     * @return void
     */
    public function apply(Builder $builder, Model $model)
    {
        $builder->whereHas('company', function($query){
            return $query->whereHas('employees', function($query){
                return $query->where('user_id', Auth()->user()->id);
            });
        });
    }

}