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:       How did you meet your girlfriend ? 
 Person2:I met Amanda through a friend . 
 Person1:        That's great . Did you start dating right after you met , or did you become friends first ? 
 Person2:We started dating right away . 

formal