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:       Hello , My name is Candy Brown . May I have your name ?  
 Person2:Hello , Candy . My name is Jim White . Nice to meet you .  
 Person1:        Nice to meet you , too . Where are you from ?  
 Person2:I'm from New Orleans . What about you ?  
 Person1:        I was born here .  
 Person2:Really ? This is a beautiful town .  
 Person1:        It's nice talking to you . But I have to go .  
 Person2:OK . Can I have your phone number ?  
 Person1:        OK . It's 15066688866 . Call me ! Bye-bye , then .  
 Person2:I will . Bye . 

informal