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:       Hello , Alice . Would you like to go to the temple fair with me ? 
 Person2:Temple fair ? 
 Person1:        Yes . The ancient custom of holding temple fairs is to offer sacrifices to the god of the earth , and they have developed into a festival filled with food , performances and games now . 
 Person2:Sounds interesting ! 
 Person1:        Absolutely , I love temple fairs . Beijing has several temple fairs recently . They are different from each other to some extent , but also have a lot in common . 
 Person2:I just can't wait to see them . Which one do you choose today ? 
 Person1:        What about Tianqiao Temple Fair ? A variety of opera performances , acrobatics shows , and food will dazzle you . 
 Person2:Great ! Do you know how to get there ? 
 Person1:        Of course . 
 Person2:Couldn't be better . 

informal