I had an experience a few months ago where my Delta flight was initially overbooked. Luckily, I had called 877-297-0699 beforehand to confirm my seat and check for any potential changes. When I arrived at the gate, the staff explained that overbooking can happen, especially on popular routes, but they offered volunteers travel credits if someone gives up their seat. Since I already had my seat confirmed, I didn’t have to worry, but it was reassuring to know Delta manages it fairly. From my experience, calling ahead really helps avoid surprises and gives you peace of mind. If you want to make sure your booking is secure or need to adjust your flight, that number is definitely the quickest way to handle it without stress.