Use python 3.6 please

Write a program that prompts a user to enter their name, and using that name, generates them a University of Auckland username. Name your program 'YourUserNameA103.py', e.g. dazh001A103.py A University of Auckland username consists of the first letter of the user's first name (in lowercase), followed by the first three letters of their surname (also in lowercase), and followed finally by a randomly generated three digit number from 1 to 999. You can assume that the user will always enter only a first name and a surname separated by a space as their name. You can also assume that their surname will have at least 3 letters. Below are three example outputs using the completed program. Your program must give the output in the same format as the outputs in the three examples below University of Auckland Username Generator Please enter your name: Damir Azhar Your username is dazh007 University of Auckland Username Generator Please enter your name: Adriana Ferraro Your username is afer095 University of Auckland Username Generator Please enter your name: Ann Cameron Your username is acam988