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:       Hi , do you have any tickets for the show tonight ?  
 Person2:Sorry , it ’ s all sold out .  
 Person1:        Well , do you have any for tomorrow ?  
 Person2:We have tickets for the matinee . It starts at 3p . m .  
 Person1:        Ok . I ’ ll take it .  
 Person2:Where would you like to sit ?  
 Person1:        Do you have anything in the middle section ? I want a good view , but sitting too close hurts my eyes .  
 Person2:Certainly . 

informal