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 do you plan to do on Sunday morning ?  
 Person2:Nothing special .  
 Person1:        How about going to English corner with me ?  
 Person2:Oh , I'd rather not .  
 Person1:        Why not ?  
 Person2:You know , I am poor at English , especially spoken English .  
 Person1:        That's why you should go there , If you don't dare to speak English owing to the fact that you are afraid of making mistakes , you simply will never learn English . 

formal