The most common use case for NLP is voice-controlled smart assistants, such as Apple Siri or Amazon Alexa, which let users interact with computers simply by speaking to them. Another common use case is chatbots in customer support, sales, and marketing. These provide a natural, albeit AI-powered way for customers to resolve issues and queries quickly rather than waiting for human representatives. More advanced use cases include sentiment analysis for qualifying customer feedback across social media and online review sites, uncovering sales signals in inbound and outbound calls, and classifying and prioritizing incoming emails.