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:       We have reservations for two at your restaurant tonight .  
 Person2:Yes , What can I do for you , sir ?  
 Person1:        I'm calling to see if I can request a specific table .  
 Person2:I can try to arrange that for you .  
 Person1:        I proposed to my wife in your restaurant and I would like the same table if I can .  
 Person2:Can you describe for me , where you were sitting ?  
 Person1:        It was a little table by the bay windows overlooking the wharf .  
 Person2:You're in luck . We still have that little table . 

informal