def add_booking(company, booking_ref, course, **kwds):
res = Booking(company=company, booking_ref=booking_ref, course=course)
if 'fare' in kwds:
res.fare = kwds['fare']
if 'paid_by' in kwds:
res.paid_by = kwds['paid_by']
if res.last_date < kwds['paid_by']:
res.last_date = kwds['paid_by']
if 'state' in kwds:
res.state = kwds['state']
if 'amount_in_credit' in kwds:
res.amount_in_credit = kwds['amount_in_credit']
if 'credit_expiry' in kwds:
res.credit_expiry = kwds['credit_expiry']
if res.last_date < kwds['credit_expiry']:
res.last_date = kwds['credit_expiry']
c = Company(key_name=company, company=company)
db.put_async(c)
res.put()
_use(res.key())
return res.to_dict()
