Where would a flight attendant find service guidelines for First Class customers on a Delta CRJ 900 flight?

The InFlight Service Manual (ISM) is specifically designed to outline the service guidelines and procedures that flight attendants must follow while serving passengers, including those in First Class. This manual provides detailed instructions on everything from meal service to customer interactions, ensuring that flight attendants deliver a consistent and high-quality experience for all passengers.

While the Flight Operations Manual outlines the technical and operational procedures for pilots and flight crew, and the Standard Operating Procedures (SOP) may include broader operational guidelines, neither focuses specifically on in-flight customer service. The Safety Procedures Manual primarily addresses safety protocols rather than service guidelines. Therefore, the ISM is the most appropriate and relevant source for flight attendants seeking information on how to serve First Class customers effectively on a Delta CRJ 900 flight.