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 but it needs to be a guesthouse. Sentence2: Can you please give me your departure and destination, please? Sentence3: There are 7! Do you need internet and parking? Sentence4: How much is the price per ticket? Sentence5: I would like a hotel in the north side with four stars, please. Sentence6: Please, for 7 people, 4 nights. The same day as my train. What was the travel time on that train again? Sentence7: I want to leave after 18:00 to Broxbourne from Cambridge. Sentence8: I have booked you at Acorn Guest House. Your reference number is MMSZTKRS . Your train trip is 60 minutes long, but you've not booked. Would you like to do that now? Sentence9: Can you help me find a train leaving after 18:00 on wednesday? Sentence10: I'm also looking for a place to stay in the moderate price range. Sentence11: Is there a specific area you would like to stay in? Sentence12: I have one departing at 19:01. Would you like me to book a ticket? Sentence13: You're welcome, have a great day! Sentence14: Thank you, that is all the information I needed. Sentence15: 17.90 pounds. Would you like me to book it? Sentence16: I have five places. Shall I book you one? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System