| Objective | OB04: Keep the patient socially active |
| TDP | |
| Actors | Humanoid Robot, PwD |
| Pre-condition | The patient needs social contacts. |
| Post-condition | The patient becomes happier after having social interactions with the robot. |
| Action sequence | 1) The robot/ the patient starts conversations of random topics 2) The robot and the patient have small talks with each other |
| UC Step | Requirements | Claims | IDP |
| 1 | RQ4.0: Respond to players' conversations | IDP: Explain a Group Activity | |
| 2 |