Adding fk key to second table when creating new row in first table

How can I implement automatic addition of the Fk key to the "Booked" table when creating a new row of data in the "Request" table? i use Django.

class Booked(models.Model):
booking_id = models.AutoField(primary_key=True)
request_id = models.ForeignKey('Request', models.CASCADE, db_column='request_id')

class Request(models.Model):
    request_id = models.AutoField(primary_key=True)
    ...

from django.db.models.signals import post_save

def create_Booked(instance, created, **kwargs):
    if created:
        Booked.objects.create(request_id_id=instance.request_id)


post_save.connect(create_Booked, sender=Request)