Walmart goes upscale with personal shopper service

Walmart on Thursday unveiled a new concierge shopping service enabling customers to get quick deliveries and advice from a personal assistant, going upscale in theretail giant's battle with Amazon.The new $50 per month service called Jetblack is launching in New York, offering "curated shopping recommendations" using both artificial intelligence and professional assistants.The new subscription service ramps up competition with Amazon, which gives customers a variety of benefits and delivery opti