What should a flight attendant do if a passenger is overheated and shows signs of heat exhaustion?

Providing water and finding a cooler area for the passenger experiencing signs of heat exhaustion is the appropriate response because it addresses the immediate need to cool down and rehydrate. Heat exhaustion can lead to more severe conditions like heat stroke if not treated promptly. Water is crucial for rehydration, and locating the passenger in a cooler environment helps lower their body temperature.

This approach can help stabilize the passenger's condition while ensuring that they receive the necessary care and monitoring. Monitoring is still important, but the priority should be on hydration and reducing exposure to heat. If these measures don't alleviate symptoms or worsen, medical assistance might then be required. Balancing the immediate cooling and hydration needs with a follow-up is essential in these situations.