Search user by full name

Create a Django ORM query that searches for a user record using the full name, formed from the fields last_name, first_name, and middle_name.

class User(models.Model):
    last_name = models.CharField('Last Name', max_length=128)
    first_name = models.CharField('First Name', max_length=128)
    middle_name = models.CharField('Middle Name', max_length=128, blank=True, null=True)

class Employee(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)