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'.
Input: Person1: Where did you go yesterday ?
Person2:I went to Croydon .
Person1: Did you go shopping ?
Person2:No , I went for an interview .
Person1: Oh , did you get a job ?
Person2:Yes , I got a job as a Management Trainee .
Person1: Fantastic .
Output:
informal