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": "account_balance", "description": "Fetch the Binance Coin (BNB) balance for a given address on the Binance Smart Chain.", "parameters": {"address": {"description": "The address for which you want to fetch the BNB balance.", "type": "str", "default": "0x0000000000000000000000000000000000000123"}, "network": {"description": "The network to use, either 'mainnet' or 'testnet'. Defaults to None.", "type": "str, optional", "default": ""}}}]
I need the BNB balance for the address '0xa1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0' on the Binance Smart Chain mainnet. Also, fetch the balance for the address '0xabcdefabcdefabcdefabcdefabcdefabcdefabcd' again on the mainnet.
user
assistant
[{"name": "account_balance", "arguments": {"address": "0xa1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0", "network": "mainnet"}}, {"name": "account_balance", "arguments": {"address": "0xabcdefabcdefabcdefabcdefabcdefabcdefabcd", "network": "mainnet"}}]