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: What type of food is that? Sentence2: We have one expensive hotel in the east. Would you like me to book a room for you? Sentence3: Actually, can you find me a cheap place instead? Sentence4: Thank you for the booking of my taxi. That is all for now. Sentence5: I am not looking for a specific food type but I would like it to be in Centre please. Sentence6: dojo noodle bar is a cheap restaurant in the centre of town. Would you like to make a reservation? Sentence7: That is asian oriental. Is that okay? Sentence8: Where are you going? Sentence9: You mentioned earlier about the Autumn House being a guesthouse that is cheap in the east. I guess I can do a guesthouse. Let's book there please for Friday. Sentence10: im looking for the expensive price range Sentence11: Alright, I have you in a yellow volvo and their contact number is 07925575178. How else can I help? Sentence12: Booking was successful. The reference number is : RHFZM04W . Sentence13: Sure thing, what price range are you looking for? Sentence14: There will be 4 of us and we will need 3 nights starting Friday please. Sentence15: Enjoy your visit to the restaurant. Sentence16: I will also need a taxi leaving the hotel by 23:00. I will need the car type and contact number. Sentence17: I am going to the restaurant Sentence18: No, I'm sorry can you lookup a hotel in the east that's priced cheap and has free wifi? Sentence19: Sounds good. I am also looking for a place to stay in the East. Can you help me find something? Sentence20: how about one that has free parking? Sentence21: What type of food are you interested in? Sentence22: Of course! How many rooms will you require and for how many days? Sentence23: How about autumn house? Sentence24: I'm sorry, there doesn't appear to be any cheap hotels located in the east. Sentence25: No, I need a hotel please. Sentence26: I'm looking for a cheap restaurant Sentence27: Autumn house is cheap but it is a guesthouse. Is that okay? Sentence28: no I am sorry something else perhaps? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User