When someone else is engaged in conversation, don’t interrupt unless necessary.
A few weeks ago I was working in the church office on the Christmas Party. I asked someone there for some help in brainstorming ideas for food. As we started talking, another person asked me a question related to another project that would take place later that day. I responded, “Excuse me, I’m talking with this person right now. Would it be alright if I answer your question later?” He looked embarrassed and sheepishly said yes.
Please be considerate and not interrupt another person’s conversation. If you do need to interrupt, do so graciously. Don’t simply barge in with “Hey, what do you think of this?”