Talk

We share our feelings through communication. We communicate mostly by talking. Usually, the pattern is that one is talking and the other one is listening. Most of the time, the one who was listening should respond to the one who was talking. We can tell whether people like the topic from the response made by the one we are talking to.
Generally speaking, if people are interested in a topic, they are willing to talk. That is to say, the conversation is very easy to continue. Sociable people are often talkative. They can usually find the topic which both people are interested in. For most people, it is difficult to cope with persons who are very silent. Talking to these silent people, these silent people tend to answer your questions or if you do not ask questions, they are likely to give you no response, especially when it is the first time you converse with each other.
As regard response, sometimes we do not want to be disturbed, especially when we are doing our work, in which case we would probably not want to respond to others. However, it is not good if we do not respond to others. Supposing you talk to a person but he gives no response, you will feel very embarrassed.
Anyway, try to respond to people in a proper way.