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: No need for a booking, right now. Could you tell me the arrival time? Sentence2: Is there a train I can take from cambridge that leaves after 18:15? Sentence3: it is located in sleeperz hotel, station road Sentence4: No, but I do need free parking and wifi. Also, are there any 0-star places? I'm feeling adventurous. Sentence5: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence6: Could you book it for 3 people and 4 nights starting Wednesday? Sentence7: Do you have a specific area in mind? Sentence8: Please give me the correct area of town. Sentence9: the arrival time is 20:06 Sentence10: The TR1006 leaves at 19:00. Would that work? Sentence11: Great, thanks so much, that's all I need! Have a great day! Sentence12: cityroomz is a moderately priced 0 star, but they don't provide parking. It's in a totally sketchy area called Sleeperz. Want to give it a shot? Sentence13: I would like to leave on Sunday and go Leicester. Sentence14: Sure. The TR9517 leaves at 18:21 on Sunday for Leicester. Would you like me to book it? Sentence15: Booking was successful starting wed. Reference number is : N18DU4NR . CityRoomz, sleeperz hotel, station road, cb12tz. Sentence16: I also need a place to stay in the moderate price range. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User