How does Persse find Hermann Pabst?

First, Persse calls every Pabst listed in the Los Angeles telephone book, but none are Hermann or have a daughter named Angelica. Then, he starts working through the airline offices, asking for Mr. Pabst until finally, at Transamerican, he is put through to a secretary. When he mentions Angelica's and Lily's names, the secretary puts him on hold long enough to arrange a short amount of time with her boss at the airport.