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: Great it's all booked your reference number is 5X6H64MG . Sentence2: I'm looking for a restaurant in the centre of town and it needs to be in the expensive price range. Sentence3: Thank you very much for your help. Have a great day! Sentence4: Thank you very much, yes, I also need to book a train ticket. I'd like to take the train on the same day and arrive by 09:45 if possible. Sentence5: I have 84 train departures with this criteria. Where are you departing from or where is your destination? Sentence6: I'm open to anything. I need a booking for 5 people at 12:00 on Wednesday. Give me the reference number please. Sentence7: I'll be leaving from kings lynn. Any train that gets me there close to the arrival time will be fine. Sentence8: You have a reservation for 5 at the Asian restaurant, Kymmoy at 52 Mill Road City Centre for 12:00 on Wednesday, reference number CL644V0R . Anything else I can assist with? Sentence9: Nope that should do it Sentence10: What type of food are you interested in having? Sentence11: You are very welcome! Before we end the conversation, did you need any other assistance? Sentence12: That works perfectly. Please make the booking for five people, and include my reference number, thank you. Sentence13: I have a train that leaves Kings Lynn on Wednesday at 08:11 and arrives at 08:58. Will this work for you? Sentence14: Alright. Enjoy the rest of your day! Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User