Can you find me a quote by Albert Einstein?
user
{"name": "search_quotes", "arguments": {"author": "Albert Einstein"}}
[{"type": "function", "function": {"name": "search_quotes", "description": "Search for quotes based on author or topic", "parameters": {"type": "object", "properties": {"author": {"type": "string", "description": "The author of the quote"}, "topic": {"type": "string", "description": "The topic of the quote"}}, "required": []}}}, {"type": "function", "function": {"name": "calculate_age", "description": "Calculate the age based on the birthdate", "parameters": {"type": "object", "properties": {"birthdate": {"type": "string", "format": "date", "description": "The birthdate in YYYY-MM-DD format"}}, "required": ["birthdate"]}}}]