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:       Excuse me , can you tell me which is Bob Rice's office ? 
 Person2:Sure . It's the third office down this hall . Are you looking for Bob ? 
 Person1:        Yes . He told me to come by this morning . 
 Person2:I'm sorry , but he's not in the office now . Do you have an appointment ? 
 Person1:        An appointment ? 
 Person2:Yes . What time did he expect you ? 
 Person1:        He said I should come by this morning . He didn't give me a time.He said I could come any time before noon . 
 Person2:I see . He's usually here on Tuesday mornings ... 
 Person1:        Today is Tuesday . 
 Person2:I know . He's usually here , but today he went out to a site on the east side . 
 Person1:        That's too bad . I need to discuss these plans with him . 
 Person2:Why don't you make an appointment for later in the week ? 
 Person1:        Alright . 
 Person2:He's here on Tuesdays , Wednesdays and Fridays . What day did you want to see him ? 
 Person1:        Friday is good . 
 Person2:Morning or afternoon ? 
 Person1:        Morning . 
 Person2:I can put you down for ten o'clock . Is that alright ? 
 Person1:        Yes . My name is Laura Wills . 
 Person2:Alright . I have you down for ten AM this Friday . 
 Person1:        Thank you . 
 Person2:You are welcome . 

informal