I had not been informed about your

I had not been informed about your transportation’s change as well. I understand that Khun Chainarong would go to pick you up at the hotel in the morning and he needed to go to pick up Sunil, SK’s boss at the airport in the afternoon.
To avoid any issue, I will ask Khun Narm to assign only Khun Chainarong to support you daily. However, Khun Chainarong will not be able to pick you up at the office today at 5:00 pm, there will be another driver send you back to the hotel.