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 5 entertainment attractions in town, but they are only found in the east, south, and west. Sentence2: Thanks for using our services. Sentence3: Great. Thanks for all your help. Sentence4: You're welcome! Is there anything else I can help you with? Sentence5: That is all for now. I'll let you know if I need more help in the future. Sentence6: Train TR8176 leaves at 15:25 and will arrive at your destination at 15:52. Would you like me to reserve you a seat on that train? Sentence7: Christ's college is in that area and has free admission. Sentence8: Cool. Could you tell me the postcode and their address? Sentence9: Is there any entrance fee? Sentence10: There is no entrance fee for the attraction. Sentence11: Yes, that sounds good. I am also interested in finding an entertainment centre at my destination. Sentence12: I'm leaving for Cambridge from Ely. Sentence13: I'm disappointed but I would love to see a college, too. Is there one in the centre? Sentence14: sure, what is your destination? Sentence15: I'm heading out on Saturday and need a train that arrives by 17:45 Sentence16: Post code is cb23bu, and their address is saint andrew's street. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User