Travel couriers either accompany travellers or holidaymakers on their journeys or are resident at a holiday resort to welcome their guests when they arrive. The first sort of courier is known as a coach courier, who escorts parties on national or international coach trips, ensuring that everything runs smoothly: the other sort is known as a transfer courier, meeting guests at airports and guiding them through customs and to their hotels, usually in a coach provided by the holiday company; they are resident at the holiday resort in order to assist their guests with queries or any problems they may have whilst staying there.