Original sentence: Airlines may ask for volunteers to give away their seats, and/or refuse boarding to certain passengers, in exchange for a compensation that may include an additional free ticket or an upgrading in a later flight.An airline, rail, or shipping company can book more customers onto a vehicle than can actually be accommodated by an aircraft, train, or cruise ship.In the EU, European Commission Regulation 261/2004 sets out compensation requirements for airlines that deny boarding to passengers due to overbooking.Recently Air Deccan, the Indian low cost airline was alleged to overbook.Some airlines, like JetBlue Airways, easyJet and Ryanair, do not overbook as a policy that provides incentive and avoids customer disappointment
Edited sentence: Airlines will ask for volunteers to give away their seats in exchange for a compensation that can include an additional free ticket or an upgrading in a later flight.During the recent times, Air Deccan, the Indian low cost airline was alleged to overbook.In the EU, European Commission Regulation 261/2004 sets out harsh compensation requirements for airlines that deny boarding to passengers due to overbooking.Some airlines, like JetBlue, do not overbook as a policy that provides incentive and avoids customer disappointment.Vehicle transportation infrastructure: An airline, rail, or shipping company can book more customers onto a vehicle than can actually be accommodated by an aircraft, train, or cruise ship