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 . I need to refill this prescription .  
 Person2:It says on the bottle here that you can have two refills .  
 Person1:        Yes , I need to refill it today .  
 Person2:Alright . I'm sorry , Miss . According to our file , this prescription has already been refilled twice .  
 Person1:        I was worried about that . I couldn't remember if I had it refilled twice yet or not .  
 Person2:Well , it looks like you have.You will need to see your doctor to get a new prescription .  
 Person1:        Listen . This is an emergency . I tried to call my doctor , but he is out of town . So I can't see him in time . I need this medicine . It is for skin condition . I've run out.Can you just refill it once more ?  
 Person2:I'm sorry , Miss . We can't do it . We must follow the prescription.And this prescription has run out .  
 Person1:        But I need it . Please . Refill it for me just this once . I can go to the doctor around ten days from now . Then I'll have another prescription .  
 Person2:Miss , I understand your problem.But it is against the law for us to sell certain medicines without a prescription.It ' s the law . I can't do anything about it.We never sell medicine unless we have a proper prescription . Never .  
 Person1:        But I have a prescription . I just need more of it .  
 Person2:A prescription must be valid . It cannot be an expired prescription . I'm sorry , Miss . It's the law.You will have to find another doctor who will prescribe this for you .  
 Person1:        Oh , it will be so expensive ! I have a special medical plan , and I can only see one doctor.It will cost me a lot of money to see another doctor .  
 Person2:Miss , I just can't help you on this . I'm a pharmacist , not a doctor . And there are other customers I need to help now . I know it is frustrating when this happens.But there is nothing I can do about it . I'm sorry .  
 Person1:        This is ridiculous ! In Taiwan , it is much easier to get medicine when I need it .  
 Person2:Maybe that's true . I don't know.But I'm sure in Taiwan you have prescriptions too . 

informal