Maximum Stay is 6month(s)。Passenger tickets are non-endorsable,When changing tickets within the validity period,a fee of USD50.00 will be charged, regular tickets should be applied for refund within 13 months from the date of the first traveling ; occasional tickets(including regular ticket unused) should be applied for refund within 13 months from the date of ticket issuing,a fee of USD82.00 will be charged as refund fee, late application is not allowed.(In the case when any portion of the booked ticket is in use, other flight segments cannot be refunded.)