Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: How about some Italian food in the West? There are two restaurants we can try. Sentence2: book it for 3 people and 5 nights for monday. Sentence3: Are there any Eritrean restaurants in the east instead? Sentence4: I have booked a table for 3 for Monday at 16:00 at Pizza Hut Fen Ditton. Sentence5: There is one Italian restaurant in the East. It is moderately priced. It is located in Cambridge Retail Park. Sentence6: Ok great. Can you book a table for 3 at 16:00 on Monday? Sentence7: I just booked it for you. Your reference number is 3P75NAMG . Is there anything else I can do for you? Sentence8: I am sorry, there are no Eritrean restaurants in the East either. Would you care for another type of cuisine? Sentence9: I'm afraid there are no eritrean restaurants in the area. Would you like to try a different cuisine? Sentence10: Yes, I am looking for a restaurant that serves Eritrean food. Sentence11: That would work, I need to get a table the same day as my other booking. Sentence12: Thank you for your help, have a great evening. Sentence13: Let's try Italian food. Sentence14: I need to find out information about a particular hotel called warkworth house Sentence15: Okay should we try a different restaurant then...? I've never had this problem before... Sentence16: It has some great reviews. It is a 4 star moderate located on Warkworth Terrace. What else would you like to know? Sentence17: Booking was successful. Reference number is : 3P75NAMG . Sentence18: Okay, maybe try it again for Wednesday? Sentence19: May I have the reference number please ? Sentence20: How about wednesday? Sentence21: I am not showing that you were booked and I am having trouble booking this for you. Do you have other choices ? Sentence22: Unfortunately, the restaurant can't accomodate you. Sentence23: I do apologize, but it seems like I'm having trouble booking this for you at this time. Sentence24: You are welcome and you do the same .Goodbye Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System