To help passengers, suggesting, troubleshooting, Terminal, because some passengers have used the service in airports and passenger travel for the first time, to help to ensure the journey.
Passenger assist, advise, fix the passengers. Because some passengers had used the service in airports and passenger travel, the first need help to ensure the trip.
To help passengers, introduce, the solution to the passengers. Because some passengers had used in airports and travel is the first passenger needs help to ensure the journey.