They talked between themselves while looking and pointing at the train map on the reel above the door.
The lady turned to ask a passenger engrossed with his phone if they were on the right direction towards the airport.
The guy told them they have to get on the train going on the opposite direction.
He then told them they have to get off the train at the next stop and go to the opposite side.
The problem is that the doors open in the other side of the train at the next station and crossing to the opposite as advised by him would take them even further away from the airport.
Another passenger saw that the guy has given them the wrong information and advised them to go up one level at the next station and take the train on the same side that goes in the opposite direction.
After they exited, the first passenger turned to the second passenger and said, "I never alight at this station. So I don't know need to go up one level."