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:       Is breakfast served here ?  
 Person2:Yes.That ' s from 6:30 to 9:00 in the dinning room .  
 Person1:        Do I have to pay extra money for it ?  
 Person2:No , it's already included in your room fare .  
 Person1:        Thank you . 

formal