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:       You don't look very well .  
 Person2:I'm not feeling too well . I've caught a cold .  
 Person1:        Is it because of the bad weather ? It's been really miserable for the past tew days .  
 Person2:Hasn't it ! It's been cold and windy recently.Do you like the weather here ?  
 Person1:        Not really , but I've got used to it now .  
 Person2:Oh , I'm going for a trip to New York this autumn . What's the weather like in New York ?  
 Person1:        Not quite good . It's windy and dry . We have got continental climate there . It's dry all the year round . Usually autumn is the best season of the year In New York .  
 Person2:Is it cold in autumn there ? Should I take any warm clothes with me ?  
 Person1:        No , it isn't very cold at that time . You'll only need some light wool clothing with somejackets and shirts . 

formal