chat_history: ['I am waiting to find out if I really won the lottery.', 'Me too! I bought about a thousand dollars worth of tickets last night!', 'Wow. I spent $500.00 myself. I hope it pays off!']
sys_response: You and I both! No matter who wins, let's promise to split the pot.
situation: I can't hardly wait to see if I really did win the lottery.