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:       I'd like to remit 5000 dollars to my friend .  
 Person2:Please show me your ID card and tell me the receiver's address .  
 Person1:        Room 20 , Suzie Building , Beijing Road , Shenzhen , China .  
 Person2:Ok , that's all . 

informal