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:       What a lovely day . The sun is shinning and the sky is so blue . It's a perfect day to go to the beach and get a beautiful tan .  
 Person2:Great idea . Unlike you , I just want to enjoy watching the sea and playing with the sand . I do not want to get a tan because I look good in pale skin .  
 Person1:        Come on . Getting a tan symbolizes health and wealth in western countries .  
 Person2:While the pale color symbolizes beauty and elegance in most Asia countries .  
 Person1:        That is a really interesting fact .  
 Person2:I will bring a big hat and apply a lot of sunscreen before setting off the beach .  
 Person1:        Just do whatever you feel like doing .  
 Person2:( At the beach ) My bag is so heavy . Let's put the stuff under the tree .  
 Person1:        Good idea . It is always cooler in a shade .  
 Person2:I can't wait to play in the water . My feet are burning when I stand on the sand . 

informal