breakfast_bot.py

import time

def print_pause(message_to_print):
    print(message_to_print)
    time.sleep(2)

def valid_input(prompt, option1, option2):
    while True:
        response = input(prompt).lower()
        if option1 in response:
            break
        elif option2 in response:
            break
        else:
            print_pause("Sorry, I don't understand.")
    return response

def intro():
    print_pause("Hello! I am Bob, the Breakfast Bot.")
    print_pause("Today we have two breakfasts available.")
    print_pause("The first is waffles with strawberries and whipped cream.")
    print_pause("The second is sweet potato pancakes with butter and syrup.")

def get_order():
    response = valid_input("Please place your order. "
                           "Would you like waffles or pancakes?\n",
                           "waffles", "pancakes")
    if "waffles" in response:
        print_pause("Waffles it is!")
    elif "pancakes" in response:
        print_pause("Pancakes it is!")
    print_pause("Your order will be ready shortly.")

def order_again():
    response = valid_input("Would you like to place another order? "
                              "Please say 'yes' or 'no'.\n",
                              "yes", "no")
    if "no" in response:
        print_pause("OK, goodbye!")
    elif "yes" in response:
        print_pause("Very good, I'm happy to take another order.")
        get_order()

def order_breakfast():
    intro()
    get_order()
    order_again()

order_breakfast()