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:       Sorry ! Excuse me ! I got your message .  
 Person2:Taylor ? Taylor ! Is this a joke ? Is it really you ? But ... but ... everyone said you were dead !  
 Person1:        That's OK . Just let it out . I'm OK ! I was out of town with ... Femi .  
 Person2:Oh , Taylor ! I'm so ... so happy . But then ... who's that ?  
 Person1:        Taylor Smith . But not me . The pallbearers are carrying out the casket . It would be rude to just leave . Let's follow . 

informal