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: Hi ! Wang Mei.Come and have a look at my new dress .
Person2:Oh ! What a beautiful dress ! It fits you so well.You look so charming in the dress .
Person1: Thank you for saying so .
Person2:Where did you buy it ?
Person1: I bought it in a store near my school .
Person2:How much is it ?
Person1: It's only thirty yuan .
Person2:It's so cheap . I'll buy one , too .
Person1: I'll go together with you .
Output:
informal