If raise not working with same code

TICKET_PRICE = int(10)

tickets_remaining = int(100)

while tickets_remaining >0:
    print ("Remaining tickets are {}".format(tickets_remaining))

    name = input("What is your name?  ")

    ticket_required = input("Hom many tickets your what {}".format(name))
    try:
        ticket_required =int(ticket_required)
        if ticket_required > tickets_remaining:
            raise ValueError("wrong quantity")
    except ValueError as err:
        print("Error:{} please enter valid ticket".format(err))
    else:
        price= ticket_required*TICKET_PRICE
        print ("{} your total bill is ${}".format(name,price))

        confirmation = input("would you like to continue y/n")

        if confirmation == "y":
            print("SOLD {} tickets to {} for ${}".format(ticket_required,name,price))
            tickets_remaining -= ticket_required
            print ("Remaining tickets are {}".format(tickets_remaining))

        else: print ("thank you for your enquiry {}".format(name))
print("we are sold out")