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:       This way , please . We've got a nice private for you .  
 Person2:That's good . Thank you .  
 Person1:        Here we are . I hope you will like it .  
 Person2:It's good . It's a nice room .  
 Person1:        And here is the menu . I'll come back soon .  
 Person2:Thank you . 

informal