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 are your weekend arrangements ?  
 Person2:There're many things I can do on weekends .  
 Person1:        What sort of things are you interested in ?  
 Person2:I'm keen on talking short trips to nearby scenic spots . More often than not , I go with some of my friends . By the way , what are your favorites ?  
 Person1:        I love swimming and cycling . On Sunday morning I have swimming practice for an hour . In the afternoon , I just ride my bike around the city or along the country roads for almost two hours .  
 Person2:That's great ! I think they do you a lot of good . Where do you swim ?  
 Person1:        Mostly in the city's swimming pool . But on occasion , I go to the beach with friends . Well , what do you do at leisure ?  
 Person2:I'm fond of dancing .  
 Person1:        Good.You really know how to enjoy yourself . 

informal