Help with input data format

The data user will input for the script is:<br><br>**1) Collection of names, each name separated by space e.g. `John Smith, John Doe, James Bond`**<br><br>**2) Collection of phone numbers, each phone number separated by space. e.g. `12334200, 3423442, 43297588`**<br><br>**3) Collection of messages e.g. `hi, hello world, automateme`**<br><br>I want to tell the user that the input format is like this:<br><br>**`name1, name2, name3, phone1, phone2, phone3, message1, message2, message3`**<br><br><br>What is the best way to describe it to the user so that they can easily understand how they should input the data to the script?