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:       Good morning , Sir .  
 Person2:Hello . I'm here today to pay in some foreign currency . Is that possible at this counter ?  
 Person1:        Of course , Sir . What kind of currency would you like to deposit ? And what is the amount you would like to pay in ?  
 Person2:10,000 Japanese yen .  
 Person1:        OK , Sir . Would that be Fixed or Current Deposit ?  
 Person2:Fixed .  
 Person1:        And how long are you depositing for ?  
 Person2:For one year , that's what I usually do . Better interest , you know . 

formal