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# in my last if statement. It does not matter if I input yes or not. my code always output "SOLD OUT". I don't know why.

```SERVICE_CHARGE = 2
TICKET_PRICE = 10
tickets_remaining = 100
#create the calculate function, it take the number tickets and return
# return TICKET_PRICE * num_tickets
def calculate_price(number_of_tickets):

return TICKET_PRICE * number_of_tickets + SERVICE_CHARGE

while tickets_remaining >= 1 :
print("there are {} tickets".format(tickets_remaining))
name = input("what is you name? ")
num_tickets = input ("how many tickets would you like {}? ".format(name))
#Expect a ValueError to happen and handle it appropiatly...remember to test it out!
try:
num_tickets = int(num_tickets)
#Raise a ValueError if the request is for more tickets than there are available.
if num_tickets > tickets_remaining :
raise ValueError("Sorry, There are only {} tickets remaining".format(tickets_remaining))
except ValueError as err:
#Include the error text in the output.
print("Oh no!, you don't know what an integer is. {} please try again".format(err))
else:
amount_due = calculate_price(num_tickets)
print("the total due is {}".format(amount_due))
should_proceed  = input("do you want to proceed? Y/N ")
if should_proceed == "yes" or "Yes" or "YES":
print("SOLD OUT")
tickets_remaining -= num_tickets
else:
print("thanks, {}, have a nice day".format(name))
print("the tickets are SOLD OUT")
```

MOD: I just updated your question to put your code in Markdown format so it's much easier for everyone to read, and to help you out! See the Markdown Cheatsheet that is linked just below the textbox when you're typing a question, to format code. Don't worry, it's easy! :-)

Thanks, "mystery mod". And for those unfamiliar with Markdown, there's also a video on code formatting.

```        if should_proceed.lower() == "yes":  # will also match "Yes", "YES", etc.