Complete the text with these words or phrases. gate, boarding card, flight attendants, through, get on, check-in desk,

Travelling by plane is simple. When you arrive at Heathrow Terminal 2, go up the escalator and go to the check-in desk. Show your ticket to the check-in assistant, who gives you a boarding card. When they call your flight, go to the gate and get on the plane. After the plane takes off, you can look through the window and relax. The flight attendants serve drinks and a snack.