Airbnb CEO and co-founder Brian Chesky speaks at The Fast Company Innovation Festival on September 21, 2022, in New York.Airbnb shares dropped 14% in after-hours trading after the company reported second-quarter earnings that missed analyst expectations and warned that it's seeing signs of slowing demand from U.S. customers.Here's how the company did compared to LSEG estimates for the quarter ended June 30:Earnings per share: $0.86 versus $0.92 expected.Revenue: $2.75 billion versus $2.74 billion expected.R ...