I want to book a roundtrip Thai Airways ticket from 18th June, 2015 23:35 - 22nd June 2015 18:55. It says that the fare is REFUNDABLE. Can you please tell me what fees will be charged by you and the airline in case I have to cancel and try to obtain a refund. Also, what is the procedure to get a refund? Lastly, I will be using the promo code INTSR. Can I still get a refund if a promo code is applied. Please see the attached screenshot for the flight I intend to book.