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'.

 Person1:       How old are you ?  
 Person2:Nine ... but I'll be ten on May 1st.When is your birthday ?  
 Person1:        I'm older than you ! I'll be ten on April 14th .  
 Person2:Are you going to have a birthday party ?  
 Person1:        Maybe . I'll have to ask my mother . 
formal

 Person1:       Hello . I'm Jason .  
 Person2:Hi . My name is Dolma .  
 Person1:        Nice to meet you , Dolma .  
 Person2:Good to meet you too . 
informal

 Person1:       You want to go with him ?  
 Person2:Yes ?  
 Person1:        Then you must be off your head . He is a real bastard . 

formal

