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:       OK , now let's go on to talk about initial deposits .  
 Person2:Good idea . How much do I need to deposit ?  
 Person1:        For Agreement Savings , we ask for 100,000 RIB .  
 Person2:And how do I withdraw if I need to ?  
 Person1:        You can use a Type A Agreement Savings Account the same was as a Settlement Account .  
 Person2:I'm sorry , refresh my mind . What's different about a Type B Account ?  
 Person1:        With a Type B Account , it cannot be directly involved in any transaction and it cannot be applied to any external withdrawal service . 

formal