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:       Welcome to our restaurant , Chez Attitude ! 
 Person2:Our reservation is under the name of Foster at 7:00 for four people . 
 Person1:        Yes , Mr . Foster , our hostess will be with you in just a moment . 
 Person2:We would like to begin with a cocktail while we are waiting . Would you tell the hostess to please come and let us know when our table is ready ? 
 Person1:        I will let her know where you are . 
 Person2:The patio tables look really nice . Could we be seated there , please ? 
 Person1:        I could seat you right away at an outside table if you would like . 
 Person2:Thanks ! We'll sit out there then . We will just order our drinks out there . 
 Person1:        Well , can I start you off with some cocktails while you are looking over the menu ? 
 Person2:Yes , why don't you bring us a bottle of the house Chablis with four glasses to start with ? 
 Person1:        I'll get on that right away ! 
 Person2:We appreciate your help . 

informal