Pretend you work for a cell service company. They offer three subscription plans, and you must code the billing logic! Plan 1: For $29.99 per month, the customer receives 400 minutes. Overage minutes are $0.35 per minute.
Plan 2: For $49.99 per month, the customer receives 800 minutes. Overage minutes are $0.30 per minute.
Plan 3: For $59.99 per month, the customer receives unlimited minutes. Your program must compute a customer's bill for that month.

Your program must compute a customer's bill for that month.

Prompt (ask) the user to enter their name.
If the user enters an empty string or a string with less than 2 characters, show an error and do not print any calculations.
Prompt (ask) the user to enter a plan number.
If the user enters an invalid plan number, show an error and do not print any calculations.
Prompt (ask) the user for how many minutes they used.
If the user enters a number less than 0, show an error and do not print any calculations.