What should the leader say when he wants to travel abroad and see off the banquet?

Of course, first of all, I wish the leader all the best in his journey. Since you have a close relationship, I believe it will be more sincere to express your feelings. Next, I will definitely thank the leader for his years of leadership work and care for your work and life, and make it clear that he will continue to work according to his requirements during his trip. Please rest assured that that is enough. After all, the protagonist of the banquet is the leader, so we'd better not usurp the host's role.