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:       I'm scared that she might not come back . 
 Person2:No , I don't think she's that strong-minded . 
 Person1:        But she took her luggage away with her . 
 Person2:She will be back soon.You can wait and see . 

informal