Definition: 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 , Julie . I was in your neighborhood and I'd like to drop by .
Person2:Come on in . Would you care for a drink ?
Person1: That sounds refreshing . Thanks !
Output:
informal