import random

def roll_dice():
    return random.randint(1, 6)

def main():
    print("Welcome to the Dice Game!")
    print("I will roll a six-sided die, and you try to guess the number.")

    while True:  # This loop will continue until explicitly broken
        guess = int(input("Enter your guess (1-6): "))
        if guess < 1 or guess > 6:
            print("Invalid input. Please enter a number between 1 and 6.")
            continue
        
        dice_roll = roll_dice()
        print("The die rolls... It's", dice_roll)

        if guess == dice_roll:
            print("Congratulations! Your guess is correct!")
        else:
            print("Sorry, your guess is incorrect. Better luck next time!")

        play_again = input("Do you want to play again? (yes/no): ")
        if play_again.lower() != "yes":
            print("Thanks for playing!")
            break  # Exit the loop if the player doesn't want to play again

if __name__ == "__main__":
    main()