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:       What does this have to do with me ?  
 Person2:You know all about coffee . I need your advice , so I won't look stupid when I order .  
 Person1:        Order tea . Isn't that what you like to drink ?  
 Person2:Come on , Hugh ! Tea is for wimps ! Please , I need your help .  
 Person1:        If you want to be macho , order a double shot of espresso .  
 Person2:Now you're talking . That sounds good . What is it ? 

formal