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:       Linda ? Is that you ? I haven't seen you in ages ! 
 Person2:Hi George ! It's good to see you ! 
 Person1:        What have you been up to ? 
 Person2:I just opened up my own business not long ago . 
 Person1:        Good for you ! What are you doing ? 
 Person2:I'm a professional party planner here in the city . I do catering and all that . 
 Person1:        I knew some day I would be able to profit from your love of fun ! 
 Person2:Well , I don't know about the profit part yet . But I am really having fun ! 

informal