Don’t do that: You could write some scripts to other departments (ex: Helpdesk) and asks some input for the end user, let’s take this basic example:
$surname = Read-Host "Enter your surname (in UPPER case)"
Do that: Instead of requiring an action from the end user, it makes more sense to convert in upper case the input, it’s more reliable (the user could forget or ignore that):
$surname = Read-Host -Prompt 'Enter your surname'
$surname = $surname.ToUpper()
You should try to automate the more you can in order to be more efficient.