Mary Sithole works as a Customer Service Assistant for National Express. She entered the transport industry to gain skills while studying for her engineering degree. Her job involves selling train tickets, assisting customers, providing information, and resolving problems. She likes that the transport industry keeps cities moving and offers career progression. Her advice for those interested in her role is that customer service is exciting, challenging, and no day is the same. She recommends increasing apprenticeships and mentoring programs to attract more young people to the industry.