Complete the following programming exercise $($user information$)$:

Name, Email and Phones Addresses

Write a program that keeps names and email addresses in a dictionary as key$-$value pairs. The program should display a menu that lets the user look up a person's email address, add a new name, email address, and phone number, change an existing email address and$/$or phone number, print, and delete an existing name, email address, and phone number. The program should pickle the dictionary and save it to a file $($username$\_$info.dat or username$\_$info.txt$)$ when the user exits the program. Each time the program starts, it should retrieve the dictionary from the file and unpickle it$.$

NOTE: Name your testing file as: username$\_$info.dat or username$\_$info.txt$.$ Please use python and show all comments please.