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 two in the area. One is cheap and the other is moderately priced. Do you have a preference? Sentence2: How about a thai place then? Sentence3: sala thong is just for you. Their address is 35 Newnham Road Newnham. Do you need a reservation? Sentence4: The postal code is cb39ey. Is there any other thing you might like to know? Sentence5: I don't have a Basque restaurant on the West side. Would you like me to look in other parts of town? Sentence6: No I do not I would like a 4 star guesthouse in the west with free parking. Sentence7: We don't have any Basque restaurants on the west side, regardless of price. Do you want to try a different type of food? Sentence8: Do you have a price preference? Sentence9: Well how about an expensive one then? Sentence10: No, thank you. I would like to know the postcode, if possible? Sentence11: Yes, I need a guesthouse close to the restaurant on the west side. Sentence12: I'm looking for a restaurant on the west side that serves basque food. Sentence13: I would like a 4 star guesthouse with free parking. Sentence14: gdsgfsd fg dsf gdfg d sfgds Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User