Question $4$: Create a comprehensive program that keeps your friends' names and birthdays in a dictionary. Use the screenshot below as a reference. $(35$ pts $.)$

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Friends and Their Birthdays $\}\backslash$square$\backslash$mathrm$\{$ Friends and Their Birthdays

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$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $2$

Enter a name: Bobbi

Enter a birthday: $12/3/2000$

Friends and Their Birthdays

$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $4$

Enter a name: Bobbi

Friends and Their Birthdays

$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $1$

Enter a name: Bobbi

Not found.

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$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $2$

Enter a name: Kate

Enter a birthday: $5/23/1999$

Friends and Their Birthdays

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$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $3$

Enter a name: Kate

Enter the new birthday: $5/25/1999$

Friends and Their Birthdays

$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday

$4.$ Delete a birthday

$5.$ Quit the program

Enter your choice: $5$

All done!

$(4$a$)$ Each entry in the dictionary uses a friend's name as the key, and that friend's birthday as the value. As a result, you can use this program to look up your friends' birthdays by entering their names.

$(4$b$)$ This program displays a menu via a function that allows the user to make one of the choices below. $(10$ pts $.)$

$1.$ Look up a birthday

$2.$ Add a new birthday

$3.$ Change a birthday: Extra credits!

$4.$ Delete a birthday: Extra credits!

$5.$ Quit the program

$-$ Assume the user will enter an integer. However, if the number is out of range, display this message: "Error. Please enter a valid choice:"

$(4$c$)$ The program starts with an empty dictionary, so you have to choose item $2$ from the menu to add a new entry. Store the code that adds a new entry in its own function. $(10$ pts $.)$

$(4$d$)$ Once you have added a few entries you can choose item $1$ to look up a specific person's birthday. Store the code that looks up a birthday in its own function. If a name is not found, display "Not found." $(10$ pts $.)$

$(4$e$)$ Extra credits: You can choose item $3$ to change an existing birthday in the dictionary or item $4$ to delete a birthday from the dictionary. Store item $3$ and item $4$ in two separate functions. $($Bonus: $\backslash (\backslash$mathbf$\{15\}\backslash )$ pts$.)$

$(4$f$)$ The user can choose item $5$ to quit the program. Display "All done!" $(5$ pts $.)$