Write a Python program using the input() function to prompt the user to enter a list of integers separated by spaces. The program should then calculate the product of all the even numbers in the list and print the result to the console. In case there are no even numbers in the list, the program should output a message "There are no even numbers in the list". The program should handle inputs with either positive or negative integers. Use a for loop to iterate through the list and an if statement to check if a number is even. Avoid using built-in functions like filter or reduce.
This prompt doesn't seem malicious.