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<Paper uid="P94-1001">
  <Title>I I User I I NL Input I NL Interpretation Modules Observed Conversation Acts Dialogue \] Manager j~ I Domain Directives I Domain Task Interaction 1 Modules '~'1 I I NL Output j- I NL Generation 1 Module Intended Conversation Acts Domain Observations and Directive Responses</Title>
  <Section position="4" start_page="0" end_page="0" type="intro">
    <SectionTitle>
2 Sketch of Solution
</SectionTitle>
    <Paragraph position="0"> The model we propose is that an agent's behavior is determined by a number of factors, including that agent's current goals in the domain, and a set of obligations that are induced by a set of social conventions. When planning, an agent considers both its goals and obligations in order to determine an action that addresses both to the extent possible. When prior intentions and obligations conflict, an agent generally will delay pursuit of its intentions in order to satisfy the obligations, although the agent may behave otherwise at the cost of violating its obligations. At any given time, an agent may have many obligations and many different goals, and planning involves a complex tradeoff between these different factors.</Paragraph>
    <Paragraph position="1"> Returning to the example about questions, when an agent is asked a question, this creates an obligation to respond.</Paragraph>
    <Paragraph position="2"> The agent does not have to adopt the goal of answering the question as one of her personal goals in order to explain the behavior. Rather it is a constraint on the actions that the agent may plan to do. In fact, the agent might have an explicit goal not to answer the question, yet still is obliged to offer a response (e.g., consider most politicians at press conferences). The planning task then is to satisfy the obligation of responding to the question, without revealing the answer if at all possible. In cases where the agent does not know the answer, the obligation to respond may be discharged by some explicit statement of her inability to give the answer.</Paragraph>
  </Section>
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