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:       Where can I enjoy the best local food ?  
 Person2:Well ! You like sea food ?  
 Person1:        Yes , I do .  
 Person2:Then I'd like to suggest you try Anchor Inn on Seaside Drive .  
 Person1:        Is it very far from here ?  
 Person2:No , you can walk from here . 

formal