Lesson 22, Exercise 6: The Customer Service Rep
('Rep' is very common in the US. It is short for 'Representative'.)

Watch the video. Answer the question.
Luggage as it is presented to airport personnel at the ticketing counter.
1 - Luggage (uncountable noun): Baggage, suitcases.
2 - Check in (phrasal verb): Sign in, register at a hotel or airport.

If you need a translation to your own language, use the Google Translate button at the top-right of the screen.