An approach is provided in which a question answer system monitors a voice conversation between a first entity and a second entity. During the conversation, the question answer system parses the conversation into information phrases, and constructs the information phrases into a current conversation pattern. The question answer system identifies deceptive conversation properties of the current conversation by analyzing the current conversation pattern against domain-based conversation patterns. The question answer system, in turn, sends an alert message to the first entity to notify the first entity of the identified deceptive conversation properties.