Airbnb has seen shorter booking lead times in recent weeks, with customers around the world booking their accommodations closer to their expected time of arrival.A growing share of customers are booking just days or a couple of weeks in advance, Airbnb executives said Tuesday (Aug. 6) during the company’s quarterly earnings call.This trend first appeared in July and has grown strong since then, after a first and second quarter in which the lead times were basically the same as what Airbnb saw a year earlier ...