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 4 theaters in the centre area. The mumford is one of my favorites. Can I give you more information on one? Sentence2: There are no sports in the center. Shall I change type or location for you? Sentence3: Yes, that would be perfect. Can you just give me the train ID for that? Sentence4: Hmm, that kind of stinks. Well, how about a theatre instead? Sentence5: No thank you, goodbye. Sentence6: Hello, I am looking for a train departing from Cambridge, and leaving on Friday. Do you see anything for that time? Sentence7: There are 6 options available. Would leaving at 13:59 and arriving at 15:27 work for you? Sentence8: Yes I want to leave after 13:30 and arrive at London Liverpool Street. Sentence9: What's the entrance fee? Sentence10: I am unaware of what their entrance fee is at this time. Sometimes that happens because prices fluctuate and I apologize. Can I help with anything else? Sentence11: There are tons of them! Can you tell me a bit more about your trip so we can narrow it down a little? Where would you like to go? Sentence12: Yes are there any multiple sports places to go in the centre? Sentence13: You're welcome, have a nice day. Sentence14: That is train TR4187. Is there anything else I can help with? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User