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:       The weather is terrible . 
 Person2:Yes . It was sunny and warm yesterday but the wind is really blowing hard now . 
 Person1:        I'm wearing my heavy jacket . 
 Person2:I'm going to put on more clothes , too . 
 Person1:        Will it snow today ? 
 Person2:I don't know . Do you like snowing ? 
 Person1:        Yes , when it snows , every where is white . It's very beautiful . 
 Person2:You can read the newspaper . Maybe it will tell you whether it will snow or not . 
 Person1:        Good idea . 

informal