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: I would recommend TR0393 which leaves Broxbourne at 5:32 and arrives in Cambridge at 6:32. Sentence2: There are 21 guesthouses in town with free parking. Do you prefer a specific area of town or do you have a price range? Sentence3: WiFi is not necessary, but I would like free parking. I'm looking for mid range pricing. Sentence4: There are nine moderately priced guesthouses available. I suggest Home From Home, a 4-star guesthouse that comes with internet and parking. Would you like to book a room? Sentence5: Not really but I do need a 4 star rating. Sentence6: Great! Can you book 2 seats for me on that one? Sentence7: There is a train leaving Thursday from Kings Lynn at 10:11, arriving at Cambridge at 10:58. Would you like me to pull up other listings? Sentence8: Sounds great! I'll need to book a room for 2 people, for 2 nights starting Thursday. Sentence9: Do you have a price range in mind? And will you need wifi? Sentence10: I hope I could be of service today, enjoy your stay in Cambridge! Sentence11: Your train has been booked. Your total cost is 35.79, payable at the station. Your reference number is SQUCLNLA . Can I help with anything else? Sentence12: Thats everything thanks Sentence13: Excellent. You are all set, and your reference number is : 2GHO31DA . Anything else I can assist you with today? Sentence14: i'm looking for a train leaving on thursday and arriving by 11:45 Sentence15: I need to book a room in a guesthouse that has free parking. Sentence16: Can you look up trains departing from Broxbourne instead? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User