If your conversation reaches a low point, this is a good time to do a conversation recap: Quickly summarize what you discussed together and learned [about one another]. This does several things:
1. shows you were listening, and cared enough to remember, giving others a positive impression of you.
2. reminds everyone of their shared context, strengthening the relationship and the comfort level between everyone.
3. may trigger ideas for more conversation, or remind someone of something that they might not have had a chance to say before the conversation shifted to something else.