Mary contracted with a travel agent for the purchase of a charter trip to England. The travel agent made the necessary arrangements with the charter company. The agent recommended a one-day side trip, which the client agreed to purchase. While the client was on the side trip, she was injured because a step on the company's bus was a rusted. Further, the airline overbooked Mary's return flight, which resulted in a two-day delay. What potential liability, if any, does the travel agent have in these circumstances?