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:       How are your wedding plans going ?  
 Person2:Very well . We ’ Ve got everything taken care of already .  
 Person1:        Are you going to get married in the church ?  
 Person2:Neither of us is very religious , so we decided not to get married there .  
 Person1:        Have you booked the hotel for the reception ?  
 Person2:Yes . The Palace Hotel . You have to be there .  
 Person1:        No problem . 

informal