Blackjack simple python

# BlackJack

from random import randint

# Introduction and options.
print('Welcome to BlackJack')
print('Please choose an option: \'Help\' or \'Play\'')
response = input()


# Main game function.
def Play():
    first_num = randint(1, 11)
    secon_num = randint(1, 10)
    player_total = first_num + secon_num

    dealer_num1 = randint(2, 11)
    dealer_num2 = randint(2, 10)
    dealer_total = dealer_num1 + dealer_num2

    print('Dealer\'s first number is:', dealer_num1)

    print('\nYour first number is:', first_num)
    print('Your second number is:', secon_num)
    print('Total:', player_total)

    print('Would you like a new number?: \'Yes/No\'')
    new_number = input()
    if (new_number == 'Yes' or new_number == 'yes'):
        third_num = randint(1, 11)
        player_total = third_num + player_total
        print('Your new number is', third_num)
        print('New total:', player_total)

    print('\nDealer\'s second number is:', dealer_num2)
    print('Dealer\'s total:', dealer_total)

    if ((player_total > dealer_total and player_total <= 21)
            or dealer_total > 21 or player_total == 21):
        print('\nYou win!')
    if (player_total < dealer_total or player_total > 21):
        print('\nYou lose!')


# Help function, in case the game is unclear.
def Help():
    print('The objective of the game is to achieve')
    print('the number 21 or a higher number than')
    print('the dealer. If your number is higher than')
    print('21 then you are bust and you lose, however')
    print('if the dealers number is above 21 and yours')
    print('is below then you win.')


# Function that loops the game so you can replay.
def Play2():
    Play()
    start = True
    while (start):
        again = input('\nPlay again?: \'Yes/No\' ')
        if (again == 'Yes' or again == 'yes'):
            print()
            Play()
        if (again == 'No' or again == 'no'):
            start = False


# When options are typed, the according if statement calls a function.
if (response == 'Play' or response == 'play'):
    Play2()

if (response == 'Help' or response == 'help'):
    Help()
    # Allows the users to play after viewing the help option.
    print('\nWould you like to Play now?')
    play_now = input()
    if (play_now == 'Yes' or play_now == 'yes'):
        Play2()