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:       How was your first date , David ? Are you satisfied with Jane ?  
 Person2:It was all right . She , tall and attractive , has stable job and source of income .  
 Person1:        Yes , so I think she is suitable for you .  
 Person2:But , well ... what I want to say is ...  
 Person1:        Stop acting like this . Say away !  
 Person2:Her standard for selecting life partner is a little higher . I can not accept that .  
 Person1:        What did she say ?  
 Person2:She said she want a man with large house , luxurious car and healthy parents .  
 Person1:        Give her up . 

formal