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: Ok that sounds nice please book that for 3 nights for 8 people starting on saturday. Sentence2: I have so many choices for you. It would be better to narrow the down by area. Sentence3: i also need a taxi to commute between the two places Sentence4: When would you like to leave by? Sentence5: there are no restaurants with swiss food kindly suggest another, Sentence6: I would recommend Rosa's Bed and Breakfast. Would you like to make a booking? Sentence7: I want a place to eat that serves swiss food. Sentence8: I am also needing help finding a room. I don't care if they offer free parking or internet. Sentence9: Michaelhouse Cafe, 15-19 Trumpington Street, reservation for Saturday for 8 people. The table will be reserved for 15 minutes. Reference number VRZWVKT7 . Will there be anything else today? Sentence10: Thank you very much! Sentence11: I don't need a reservation right now but can I get more information? Sentence12: Rosa's is a guesthouse in the cheap price range. It has 4 stars. The address is 01223512596 and the postcode is cb22ha. Do you need more information? Sentence13: How about does anyone serve European food? Sentence14: Have a nice day. Sentence15: I have many places serving European food. Do you have a price range preference? Sentence16: Ok I need departure location, arrival location and travel time to book your taxi. Sentence17: Okay I have booked the taxi and you should expect to see a yellow Skoda and your contact number is 07075628107. Sentence18: May I assist you with anything else today? Sentence19: Your room has been booked. Your reference number is JXKUVL9Y . Sentence20: I'd like a hotel in the south to stay at. It doesn't need to include internet, nor no need to have free parking. Closer to the restaurant would be preferred. Sentence21: Thank you. Have nice trip and call back with any questions. Sentence22: I will be leaving Rosa's Bed and Breakfast and heading to the restaurant. Please ensure the taxi arrives before 11:30. Sentence23: It doesn't matter. Please make a recommendation and book a table for 8 people at 11:30 on saturday. Sentence24: I would like to leave in time to arrive at the restaurant for my reservation at 11:30. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System