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 great weekend that was !  
 Person2:My feeling's exactly .  
 Person1:        I really enjoy the beach in the summer .  
 Person2:I couldn't agree with you more .  
 Person1:        We should come here more often .  
 Person2:You are absolutely right .  
 Person1:        I'd like to come back next weekend . 

informal