At check-in you can often choose your seat. You say: I’d like a window seat as far back as possible, please.
The story starts at the desk: you have to swear an oath and like an apple on the tablet to do so (I’d like a). The seat itself has a problem with the ventilation – so much wind that you need to hold a tin in front of it (window seat). Speak the sentence along with Alex several times until the rhythm and stress feel right.