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: Not a problem. We have 33 places to choose from. Do you have any preferences? Sentence2: Great, thanks. I think that's all I need. Thank you for all of your help. Sentence3: I will also need a train departing from Cambridge. Sentence4: I am planning a trip to Cambridge and need to find a place to stay. Sentence5: The TrainID is TR3343. It departs Cambridge at 7:00 and arrives at London Kings Cross at 7:51. The trip duration is 51 minutes. Sentence6: Your reference number is QLYJQKTY . Sentence7: I need a train on Tuesday from Cambridge to London Kings Cross that arrives by 8:30. Sentence8: You are welcome. Have a great trip! Sentence9: I have two trains. One arrives by 5:51 and 7:51, shall I book one for you? Sentence10: I will need more information to be able to help you find the correct train, where are you headed? Sentence11: I need someplace cheap near the center of town. Free wifi and free parking are a must. Sentence12: No, that's OK. Can I get the latter train's ID, departure time, and how long the trip is? Sentence13: Let's book El Shaddai for 4 people for 2 nights starting Sunday. Can you please send me the reference number? Sentence14: There are two places that fit your criteria. Alexander Bed and Breakfast and El Shaddai. Which are you interested in? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User