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:       Hello ?  
 Person2:Hi Tina , It's Joe .  
 Person1:        Hi Joe .  
 Person2:How's the weather there today ?  
 Person1:        It's really cold . It snowed all day and the schools closed early .  
 Person2:What's the temperature ?  
 Person1:        It's 30 degrees now . It was even colder this morning .  
 Person2:Have you heard what the weather is going to be like tomorrow ?  
 Person1:        I was watching the news a little earlier . They said it's probably going to snow tomorrow .  
 Person2:I really don't like the winter . I wish it were summer .  
 Person1:        Me too . How's the weather where you are ?  
 Person2:It's not too bad , but it's pretty cold here too . It was about 45 today and it rained this afternoon . I heard it's going to be a little warmer tomorrow . 

formal