At the Avianca Airlines JFK Terminal, the customer service was excellent. My seat assignment problem was promptly and politely resolved by the desk agents. They listened carefully, calmed me, and quickly came up with a workable solution. The staff's professionalism and friendliness truly pleased me. They treated me like a valued customer rather than simply another traveler. Particularly in a busy terminal like JFK, that kind of real concern and attention to detail makes a big difference.