What should passengers do if they require medical assistance during their journey?

Passengers requiring medical assistance during their journey should contact the flight attendants immediately. This is crucial because flight attendants are trained to handle medical emergencies and can provide the necessary support and assistance. They can assess the situation, offer first aid, and, if necessary, contact medical professionals or divert the flight to ensure the passenger receives timely care. Promptly informing the crew allows them to take swift action to ensure the safety and health of the passenger, while waiting until arrival or informing them only during boarding can lead to delays in receiving assistance. Filing a complaint with customer service is not appropriate during a medical crisis when immediate help is needed.