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:       the May holiday is coming up soon . Are you planning on going on vacation ?  
 Person2:I am . I just went to the travel agent ’ s and picked up these brochures .  
 Person1:        where are you planning on going ?  
 Person2:I fancy going to Tibet for a few days . Have you ever been there ?  
 Person1:        I went a long time ago , before they built the new train that can take you there .  
 Person2:would you recommend going there for a few days ?  
 Person1:        personally , I think it ’ d be better to go when you have more time . A few days isn ’ t really enough to get acclimatize yourself and to go on a few excursions outside of the capital .  
 Person2:you ’ re probably right . What do you think about Yangshao ?  
 Person1:        it ’ s a beautiful city , but I think it ’ s become too touristy . How about going to a cosmopolitan city like Shanghai or Hong Kong ?  
 Person2:I ’ d like to get away from the big city life .  
 Person1:        maybe you should consider going to a hot springs resort outside of Beijing . I heard they are very relaxing .  
 Person2:I guess if I only have a few days , I should probably think about going somewhere that isn ’ t far away .  
 Person1:        since the May holiday is the high season , you should probably call ahead to reserve a room . Here ’ s the phone number .  
 Person2:thanks ; I ’ ll give them a call later . 

formal