I do not know what is wrong with the code. Can you please help?

Assignment:Stadium Seating

• Write program that asks how many tickets for each class of seats were sold,then displays the amount of income generated from ticket sales.There are three seating categories at the stadium.Class A seats costs $20,Class B seats cost $15, and Class C seats cost $10. Assume the user will enter valid data (Integer/Float).
• Declare Global variables, Local variables and Global constants as needed in the program
• Write & call function ShowIncometo calculate and display total income generated from ticket sales for all three Class seating categories.
• The program should round the amount of income generated from ticket sales to a maximum of two decimal places.

My code:

def calculateClassATicketSales(classATicketsBought):

classASales = classATicketsBought * 20

return classASales

def calculateClassBTicketSales(classBTicketsBought):

classBSales = classBTicketsBought * 15

return classBSales

def calculateClassCTicketSales(classCTicketsBought):

classCSales = classCTicketsBought * 10

return classCSales

def calculateTotalSales( classASales, classBSales, classCSales):

showIncome = classASales + classBSales + classCSales

return totalSales

def printSalesAmount( classASales, classBSales, classCSales, totalSales):

print( "Income from Class A seats: $" + format(classASales, ',.2f') , \

"Income from Class B seats: $"+ format(classBSales, ',.2f') , \

"Income from Class C seats: $"+ format(classCSales, ',.2f') , \

"Total Income: $" + format(showIncome, ',.2.f'))

def main():

classATicketsBought = int(input(" Enter count of A seats: "))

classBTicketsBought = int(input(" Enter count of B seats: "))

classCTicketsBought = int(input(" Enter count of C seats: "))

classASales = calculateClassATicketSales(classATicketsBought)

classBSales = calculateClassBTicketSales(classBTicketsBought)

classCSales = caluculateClassCTicketSales(classCTicketsBought)

showIncome = calculateTotalSales(classASales, classBSales, classCSales)

printSalesAmount(classASales, classBSales, classCSales, totalSales)

main()