не за что(в ответ на благодарность // If a person says no sweat when you ask them about something or ask them to do something, they mean that it is not a problem or that it can be done quickly or easily.
informal – Synonyms: no problem [informal], it's nothing, you're welcome, it's a pleasure
: 'Many thanks.'–'No sweat. Anything else?'.Abysslooker)