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 don't know how to adjust my life . Would you give me a piece of advice ?  
 Person2:You look a bit pale , don't you ?  
 Person1:        Yes , I can't sleep well every night .  
 Person2:You should get plenty of sleep .  
 Person1:        I drink a lot of wine .  
 Person2:If I were you , I wouldn't drink too much .  
 Person1:        I often feel so tired .  
 Person2:You better do some exercise every morning .  
 Person1:        I sometimes find the shadow of death in front of me .  
 Person2:Why do you worry about your future ? You're very young , and you'll make great contribution to the world . I hope you take my advice . 

formal