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: I have checked again. The hotel is listed as "Allenbell" instead of "The Allenbell." Would you like to book a stay there? Sentence2: Ok, thank you. Sentence3: Okay, I have you booked at Chiquito Restaurant Bar then. Reference number is : 6OG10PUW . Sentence4: I am looking for a place to dine. The restaurant should be in the expensive price range and should be in the south of town Sentence5: There is one Italian restaurant in the south. It does have an expensive price range. Not sure if it serves pizza though. Would you like the phone number? Sentence6: The allenbell is not available. Sentence7: How many people and on what day was your previous reservation? Sentence8: Sorry I dont have anything with that name. Sentence9: why is it not? it is there please look again. Sentence10: Thank you for the Cambridge TownInfo centre. Goodbye Sentence11: Thank you, that is all that I need. Sentence12: Yes, I need reservations for the same group of people on the same day as the previous reservation. We will be staying 4 nights. Sentence13: Is there anything else I can help you with? Sentence14: Well let's change that to Mexican and I need a reservation for 2 people at 16:30 on Sunday. Sentence15: Ok. I apologize for the confusion. I booked the room for you and the reference number is DAQEE9BH . Sentence16: I have 2 chinese, indian, italian and mexican food. Did you have a preference? Sentence17: Yes, I prefer italian. I really like pizza. Sentence18: Yeah, I'm also looking for a hotel called the allenbell. Sentence19: are you sure? i was literally there 3 weeks ago... Sentence20: 2 people on Monday is what I would like. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User