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'.

Person1: I went out with Leo last night . It was really exciting .
Person2:Really ? You are a lucky dog . You know , many girls dream of dating him .
Person1: Yes , I know . He's really on the A-list .
informal

Person1: Isabelle , you know I'm not interested in fame .
Person2:Well , you don't seem to be interested in getting a real job , either .
Person1: You know I'm interested in teaching . I'm looking for jazz students ...
Person2:Yeah , and every high school student in town is banging on your door , right ?
Person1: I know they're out there . I'll find them .
Person2:You're such a dreamer ! You think that you can spread the word of jazz in an underpass ?
formal

Person1: I have to use the ATM .
Person2:Is there a problem ?
Person1: I don ' t know how to use it .
Person2:What are you talking about ?
Person1: I have never used an ATM before .
Person2:I can show you how to use it .
Person1: How do I use it ?
Person2:You need to push your card into the machine .
Person1: What ' s next ?
Person2:Enter your PIN .
Person1: What else do I have to do ?
Person2:Every option you can choose will appear on the screen . That ' s about it .
formal