The user's message is in English but has parts that might be from another language. "E kemon" could be from a local language. Let me check if "E kemon" is a common question in Bengali. Yes, in Bengali, "Aapni kemon achen?" means "How are you?" So maybe "E kemon" is a similar phrase. But the user wrote "E kemon Mamata Dipak Kumar Ghosh," which seems like a name followed by that phrase. Maybe they meant "E Khemon" as a name?