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:       My Chinese friends told me that the Spring Festival is coming soon . Can you tell me something about it ? 
 Person2:Certainly . It ’ s actually the Chinese New Year and is regarded by the Chinese as the most important holiday of the year . 
 Person1:        What happens on the holiday ? 
 Person2:Family members usually get together on the Eve of the New Year and have a special dinner to celebrate . Relatives and friends often visit each other during the holiday to wish each other a happy new year . 
 Person1:        Do people cook a lot of special dishes for the holiday ? 
 Person2:Yes , just like Christmas in western countries , it is a time for eating lots of special food . 

formal