Staff members should reserve the lowest applicable non-penalty coach fare. Travelers will make reservations as far in advance as possible to take advantage of airline discounts. Non-refundable or penalty tickets provide considerable savings opportunities and should be used when it is unlikely that an itinerary will change. Additional costs incurred due to changes in travel plans for business reasons are reimbursable. Changes made for personal convenience and optional upgrades are to be absorbed by the staff member. Baggage fees will not be reimbursed unless they are deemed appropriate due to length of stay or items needed for trip.