Write a Python program that prompts the user to enter two integers: one named start and one named finish. The program should then calculate and print the sum of all the numbers from start to finish (including start and finish in the total). You may assume that start is less than finish (although you could write your program without making this assumption).

This program should use at least two functions: one to get the inputs from the user and one to do the calculations. You can use more if you like.