instruction:
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'.
question:
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 .
answer:
informal

question:
Person1: I always think everybody looks down on me
Person2:Don't be that negative .
Person1: How can you be optimistic ? You can see it in their eyes .
Person2:I find it there is no meaning in living this world .
Person1: Don't be that negative .
Person2:Really , life is so boring .
answer:
formal

question:
Person1: Hi , Stephanie . I hear you have a new job .
Person2:Yes , I'm teaching math at Lincoln High School .
Person1: So how do you like it ?
Person2:Well , the salary is a little low , but the students are nice . How are things with you ?
Person1: Not bad . You know I'm an air traffic controller now .
Person2:Now that's an exciting job ! ! !
Person1: Yes , but it's very stressful .
answer:
informal