Dear Le Hoang,
Sorry for inconvenience.For your invoice we are following the flights that are entry in BDG system in period 1.
We already recheck your BDG system file in first period, confirmed that your data is missing the flights date on 14-11-16 and 15-11-16. So, I called to BFS (K.Kornrapin) your ground handler and they confirmed to contact you about the missing flight date.
We will wait to hear from you on any issues that you might have on this matter.