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:       So , did you go out with Richard ?  
 Person2:Yeah . We went to a movie last Saturday . We saw Police Partners II .  
 Person1:        Did you like it ?  
 Person2:Richard did , but I didn't . Of course , I told him I liked it .  
 Person1:        Yeah . So did you do anything else ?  
 Person2:Well , we went to a dance club .  
 Person1:        Did you have fun there ?  
 Person2:Yeah , we had a great time . And we're going to go there again next week ! 

informal