I need to find the general customer service phone number for Korean Air. Please navigate to their official website, locate the contact information, and provide the primary customer service phone number.
Navigate to the Korean Air contact page at `https://www.koreanair.com/contact`. Scroll down the page if necessary to reveal all contact options. Identify the general customer service phone number under the 'Customer Service Center' or 'General Information' section. State the identified phone number.
Successfully navigate to the Korean Air contact page (https://www.koreanair.com/contact). Identify the primary customer service phone number. State the phone number '1-800-438-5000'.