| Input | Process | Output | 
|---|---|---|
| Party details (date, guest list, activities) | 1. Create a guest list with names and contacts. | A complete birthday party plan. | 
| 2. Choose party activities (games, music, decorations). | ||
| 3. Set the date and time for the party. | ||
| 4. Send out invitations. | ||
| 5. Prepare party supplies (cake, decorations, etc.). | 
Explanation:
- The input consists of the essential details to plan a party, such as the date, guest list, and activities.
 - The process involves several tasks such as making the guest list, selecting activities, and preparing party supplies.
 - The output is a fully prepared party plan that includes all aspects of the event.