CSV Format Instructions:

A CSV file with the following columns in this order:

1. Phone - Can be formatted as 1234567890, 123-456-7890, or +11234567890
2. Name - Full name of the customer
3. Preferred Time - Format as HH:MM in 24-hour format (e.g., 14:30)
4. Language - Either input in English or Spanish

Example: 6505551234,John Doe,10:00,English