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: There are 3 hotels with a 2 star rating. Two in the North and one in the East. Would you like more information on one of them? Sentence2: You're very welcome. Will that be all? Sentence3: How many people will be traveling? Sentence4: The address at express by holiday inn cambridge is 15-17 norman way, coldhams business park. Their postcode is cb13lh. Anything else I can do for you? Sentence5: I would like the east please. Sentence6: i also need a taxi to commute between the two places Sentence7: It is. Would you like a room? Sentence8: I'm looking for some info on an attraction called king's college. Sentence9: I need to leave the attraction by 03:00. Sentence10: That will be all, thank you. Sentence11: Kings college is free and located in the centre of town. Sentence12: Is it in the expensive price range? Sentence13: I have the express by holiday inn cambridge. Would you like me to book that for you? Sentence14: Thank you for contacting us and have a nice day. Sentence15: I would like to find a place to stay with a 2 star rating and free parking. Sentence16: Excellent. Thank you for your assistance! Sentence17: OK, I have a blue audi coming to get you at King's college at 03:00 to take you back to the express by holiday inn cambridge. Is there anything else? Sentence18: Not at this time but what is their address and postcode? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System