Here's a recent question that a few people told me about:
Describe an interesting conversation you had with someone you didn't know. You should say
- who the person was
- where the conversation took place
- what you talked about
- and explain why you found the conversation interesting.
Remember that you don't have to tell the truth. If you have a true story, that's great. If you don't, think about a conversation that you would like to have, or try to adapt a topic that you have already prepared.
Feel free to share your ideas in the comments area.