Detailed Instructions: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Problem: Person1: Yeah . You don't need to rub it in .
Person2:And then she made the deal with MicroPower . Vince wanted to sell for fifteen million ...
Person1: Fifteen ? And Zina pushed them up to seventy-five ?
Person2:That's right . Vince still stops by her office every day to thank her .
Person1: Anyway , I'm still happy I left . I'm working as a freelancer now .
Person2:You really should have stayed with us , Dave .
Solution:
formal