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 am trying to book you on Train ID TR3211 and the cost for one person is 13.2 pounds. Please may i have the data of the four passengers? Sentence2: I need a train from cambridge on sunday. Sentence3: Just need the four tickets. Sentence4: I can try to find something for you in the morning. Do you have a more specific time in mind? Sentence5: Hobsons House if a guesthouse located in the west and is moderately priced. It has a 3 star rating and is located at 96 Barton Rd. Book it for you? Sentence6: Yes please make a booking for 4 people. Sentence7: There are several trains that match the criteria. what time do you want t leave? Sentence8: I'd like to leave after 09:00 and head to Peterborough. Sentence9: I am thinking the morning would be better for me. Sentence10: I have train TR3211 that leaves at 09:06 and will have you in Peterborough at 09:56. Would that work for you? Sentence11: Booking was successful, the total fee is 52.8 GBP payable at the station. Your reference number is L3RH9ZWP . Do you need anything else? Sentence12: I also need information on a hotel called hobsons house. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System