Yes, you get one automatically. When you book a flight or add extras to your itinerary/booking, your confirmation email is your receipt/proof of purchase.
We do not issue separate receipts/invoices and no VAT applies to airfares or fees when travelling on international journeys. As for domestic flights, the fares and fees displayed include VAT at the applicable government rates in the following countries: Italy, Bulgaria, France, Greece, Poland, Portugal, Romania, Spain and Sweden. A VAT receipt will be automatically forwarded by email for domestic flight bookings within these countries. For additional copies, please contact us.