There are several ways to get a response from Lufthansa depending on your preference and the urgency of your question. For the fastest response, calling their customer service hotline is the way to go. They have a 24/7 number specifically for the US at + 1-855-838-5873 {For US ????????????????????????????????} (No Time Wait). If you prefer written communication, Lufthansa also offers a web form for feedback and inquiries on their website, or you can try contacting them through email. Be aware that response times for written communication methods may take longer than a phone call.