Answer: Los Angeles.
Explanation: We know that the businessman is from Los Angeles, and we also know that the flight from Madrid to New York, so it is safe to say that the man is currently in the city of Madrid, in Spain.
Then, after the flight, he will be in New York, and from there hey may take a train to return to his home, so the city in which he gets off from the train maybe Los Angeles, where he lives.
