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:       Mr Edgar , hello ! How's business ? Still booming ? What can we do for you today ?  
 Person2:Well , I'm here to get some help from you . I was hoping to have someone who we can deal with exclusively . On a long-term basis , if that's possible .  
 Person1:        What we can do is to assign you a customer manager , that way you can just deal with him . You don't need to deal with anyone else .  
 Person2:That sounds perfect . 

informal