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:       Are you going to the movie theater with me tonight ? 
 Person2:Is there anything good playing ? 
 Person1:        Titanic is playing tonight . It's a blockbuster . 
 Person2:Really ? I want to go , too . 
 Person1:        OK , let's meet at the movie theater entrance tonight . Don ’ t be late . 
 Person2:No problem . 
 Person1:        ( After watching the movie . ) Are you crying ? 
 Person2:I get a lump in my throat whenever I see a tragic movie . 
 Person1:        Tragic movie ? I think it's a love story . 
 Person2:But their love is touching ! 
 Person1:        Ah , you're just too emotional . 
 Person2:I am not ! 

informal