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 am not sure what to do during the holidays , any suggestions ?  
 Person2:Well , going to a cinema , visiting the galleries , exhibitions and museums , finding and meeting old friends , exercising in the health club or mountain biking . There are so many good choices .  
 Person1:        The problem is that I find all of them are full of fun . I just don ’ t know what to do first .  
 Person2:Why not start with the most interesting one ?  
 Person1:        Actually , I ’ m interested in all of them . The more choices we have , the harder to make a decision .  
 Person2:Toss a coin to decide then . 

formal