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: You look happy .
Person2:I am happy . I just bought a new car .
Person1: Wow ! Is it a good car ?
Person2:It ' s a great car . It ' s very comfortable and it goes really fast .
Person1: Was it expensive ?
Person2:Put it this way it wasn ' t cheap .
Person1: What colour is it ?
Person2:It ' s red and black .
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: Her dress looks funny .
Person2:I wouldn't say that . It looks fine to me .
Person1: Are you kidding She is behind the times . That style went out last year .
Person2:Oh , come on , as long as it looks good on her .
Person1: Well , you ' re really as out-dated as she is .
Person2:You ' re darn right . I am out of style . So what What's the point of keeping yourself in style
Person1: No wonder you never buy me a new dress .
informal