Write a program that asks the user to input their first and last names. The first prompt should state: Please input your first name:
The second prompt should state:

Please input your last name:
After accepting the inputs, your program should output the input in the form last name, first name.

Hint: Remember that you can concatenate (add) two phrases by using the + symbol. Don't forget that you'll need to add a comma as well and that the comma must be followed by a space.