# ask user for name first
firstname = input("What is your first name? ")
lastname = input("What is your last name? ")

# store numeric data in variables
bill = 150
tip_percent = .15

# calculate how much to leave
tip = bill * tip_percent

# output to the user
print("Welcome to the restaurant",firstname, lastname)
print("For a bill of $150 you should leave $", tip, " for your server")
print("With this tip, your total bill would be", bill + tip)