1. A method for processing natural language utterances that include requests and selecting and presenting advertisements based thereon, the method being implemented by one or more physical processors programmed with computer program instructions, which when executed cause the one or more physical processors to perform the method, the computer program instructions comprising at least a conversational language processor configured to interpret a natural language utterance, which relates to a request, based on words or phrases recognized from the natural language utterance, the method comprising: in response to receiving the natural language utterance, providing the natural language utterance as an input to a speech recognition engine; in response to receiving the words or phrases, recognized from the natural language utterance, as an output of the speech recognition engine, providing the words or phrases as an input to the conversational language processor; interpreting the natural language utterance, at the conversational language processor, based on the recognized words or phrases; determining the request based on the interpretation of the natural language utterance; determining a context for the natural language utterance based at least on the recognized words or phrases; selecting an advertisement based at least on the determined context; providing the selected advertisement via an output device coupled to the conversational language processor; obtaining a response to the request; providing the response to the request; in response to receiving a second natural language utterance, providing the second natural language utterance as an input to the speech recognition engine; in response to receiving a second set of words or phrases, recognized from the second natural language utterance, as a second output of the speech recognition engine, providing the second set of words or phrases as a second input to the conversational language processor; interpreting the second natural language utterance at the conversational language processor based on the recognized second set of words or phrases and the determined context; and determining a second request, related to the advertisement, based on the interpretation of the second natural language utterance; and obtaining and providing a second response to the second request.