Traveloka acts as an online agent of airlines to assist customers with booking through Traveloka's website/app platform. Particularly from Vietjet, Vietnam Airlines, Bamboo, and Vietravel and some international airlines if the source is in Vietnam and booked through Traveloka, Traveloka can issue the invoice if the invoice request is sent from the ticket issuance time until 5th day of following month of booking issuance month. Therefore, you can order a unpaid booking so that Traveloka can check the specific policy applied.