May I suggest you have a look at games and learning activities from Autism Teaching Strategies.
1. Green Zone: Games and activities for finding common ground with others in conversation
2. The Conversation Train: Games and activities using parts of a train for parts of conversation (greetings, conversation turns, "off track" and "on track," goodbyes
3. People Points: How to score "points" with others by showing concern, interest, etc
4. CBT Mind Traveler: Examine how others deal with emotions and difficulties by "traveling" into people's minds (slides, cards, etc)