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 . I ’ m looking for a one-bedroom apartment downtown .  
 Person2:Certainly , sir . How much rent did you want to pay ?  
 Person1:        Well , I didn ’ t want to pay more than $ 520 a month .  
 Person2:$ 520 a month ? We don ’ t often have apartments as inexpensive as that.We have one apartment for $ 599 a month , on Seventh Avenue . It ’ s near the station .  
 Person1:        Is it furnished ?  
 Person2:No . it ’ s unfurnished . It has a kitchen , but no oven.There ’ s a garden in the back , but the tenants can ’ t use it.The landlord lives downstairs.Friends are forbidden in the apartment after midnight . No noise and no television after 11  
 Person1:        No , thank you ! I want an apartment , not a prison . 

informal