Where an airline is unable to operate a flight and the flight is cancelled, passengers can avail of a refund or re-routing under Regulation 261/2004, as described above. However if the flight goes ahead and the passenger is not able to take that flight, passengers, although not entitled to a refund under Regulation 261/2004, may be entitled to claim back the taxes/fees/charges portion of the ticket price under Article 23 of EU Regulation 1008/2008. The airline should be contacted in the first instance. The conditions attached to any offers by airlines, for example: in the form of vouchers for booking flights in the future or cost and charges associated with a new flight booking are at the discretion of the airline itself. However airlines are obligated to ensure that under EU Regulation 1008/2008 the final price of a flight with associated taxes and charges is always known to the consumer or clearly displayed, for example: in the online booking process before the consumer accepts to book.