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 2 the latest train arrives at 08:08 will that be ok? Sentence2: There are 4 Asian restaurants in the centre. What price range are you looking for? Sentence3: That works. Can you tell me the train ID, price, and travel time for that train arriving at 8:08? Sentence4: You're welcome, have a nice day. Sentence5: The train should depart from london kings cross and should go to cambridge Sentence6: Sure, how about dojo noodle bar? Sentence7: No, I'm sure I'll be able to just deal with it at the station. Thanks for everything! Sentence8: Thanks. I need a train for the same day but it needs to arrive by 09:30. Sentence9: Sure. Where are you departing from and where do you need to go? Sentence10: The train ID is TR4016. Each ticket costs 23.60 pounds each. And the travel time is 51 minutes. Can I book you any tickets? Sentence11: I'm looking for moderately priced restaurants. Sentence12: I am looking for a restaurant in the center that serves asian oriental food. Sentence13: That sounds good. Can I get a table for 6 on Thursday at 20:00? Sentence14: You're reference number is W3BAE5PR . Is there anything else I can help you with? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User