You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "get_a_conversation", "description": "Fetch details of a specific conversation using its ID.", "parameters": {"is_id": {"description": "The ID of the conversation to retrieve.", "type": "int", "default": ""}}}]
Get the conversation with ID 67890 that was ended by User B.
user
assistant
[{"name": "get_a_conversation", "arguments": {"is_id": 67890}}]