Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Saint johns chop house is a moderately priced British restaurant in the west of town. Sentence2: There are 5 available. Do you prefer the area of centre or west? Sentence3: I'm sorry, but there are no vacancies at that time. Would you like to try a different day or perhaps a shorter stay? Sentence4: Could you book a table for 8 at 19:45 on Tuesday? Sentence5: That's all I needed. Thank you. Sentence6: I am looking for a place to stay. Is there a guesthouse-type hotel in the west that has free parking? It doesn't need to include internet. Sentence7: There'll be 8 guests and we'll be staying on Tuesday. Sentence8: The price range does not matter. It needs to be a guesthouse and located in the west with free parking. Sentence9: Would it be available for just one night? Sentence10: Ok. A white ford will pick you up at Saint Johns Chop House at 21:45. The contact number is 07368759455. Is there anything else I can help you with? Sentence11: Yeah, I've heard good stuff about Finches', could you give me the most earliest available dates for the place? I need to get a reservation as soon as possible please. Sentence12: As long as I can book it for eight people I do not have a preference otherwise Sentence13: We will be staying 2 nights starting on Tuesday. Sentence14: I don't care, just local. Sentence15: Alright. Let's just try to narrow it down a bit. Does the price range matter? Sentence16: Yes, you're booked for one night with reference number RAHZVKVN . How else may I assist you? Sentence17: Thank you. Could you book a table for 8 on 19:45 on Tuesday? Sentence18: Oh, yeah, can you get me a car from dinner to the hotel leaving at 21:45? Sentence19: Are there any British restaurant that serve moderate priced food? Sentence20: Thank you, enjoy the rest of your day! Sentence21: I found this restaurant. This is at 4 Kings Parade City Centre. Sentence22: We have 21 entries that match that criteria. Do you have a further preference? Sentence23: What day would you like your reservation and for how many nights? Also, how many guests will there be? Sentence24: How many days would you like to stay? Sentence25: Absolutely! Your reference number is T4M08E7A . Anything else I can do for you? Sentence26: There are 2 choices that match. I would recommend Finches Bed and Breakfast as it meets your criteria, is cheap and has 4 stars. Shall I book it? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System