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:       Susan is going to get a divorce .  
 Person2:How do you know that ?  
 Person1:        She told me that peter and she has a quarrel last nigh , and she left this morning , bag and baggage .  
 Person2:Oh , I see . But I think you are making a fuss . They will make it up . Bet it . 

formal