Group 1 - The article highlights the issues faced by travelers, particularly parents with children, regarding the automatic allocation of seats in quiet carriages despite not selecting that option during ticket purchase [1][4][10] - Many parents express their concerns about being placed in quiet carriages, as children’s noise is unavoidable, leading to discomfort and anxiety about disturbing other passengers [4][5][10] - Suggestions from travelers include adding a feature to the ticketing system to identify child passengers and potentially creating dedicated "family carriages" to separate noisy children from those seeking a quiet environment [8][10][16] Group 2 - The demand for quiet carriages has increased, with some travelers reporting difficulties in securing tickets for these carriages, despite actively selecting the option during booking [9][10] - The article notes that the quiet carriage service has been in place since late 2020, with over 8,000 trains now offering this service, but the allocation process remains a point of contention [11][12] - Travelers have called for improvements in the ticketing system to better accommodate different passenger needs, ensuring that those with quiet requirements are prioritized over families with children [16]