Whether she had a meeting with her Vietnamese counterpart in Vietnam on 19 October 2015; if not, where did the meeting take place; if so, (a) what was the total cost of the trip, (b) who accompanied her, (c) in each case, what were the costs for their (i) flights, (ii) accommodation and (iii) any extra expenses and (d) what class did each specified person fly (i) to and (ii) from Vietnam?