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: Please. I'll go with your recommendation. I'll need a room for 8 people, two nights starting sunday. Sentence2: There are many trains that fit your needs on Sunday. Do you have a departure time in mind? Sentence3: Great, thanks so much...that's all I need! Have a great day! Sentence4: Ok, what day are you traveling? Sentence5: The price is 7.84 pounds and travel time is only 47 minutes. Need me to book a ticket? Sentence6: I need a train leaving Kings Lynn and heading to Cambridge. Sentence7: I need to leave on Sunday please. Sentence8: I want to leave after 16:15. Sentence9: I booked the Acorn Guest House for you. Reference #: YM7DO6IC . Can I help you with anything else today? Sentence10: What is the total travel time and price? Sentence11: Thank you for using our system today! Sentence12: I've found seven that would work. All but one, are rated 4 stars. Would you like a recommendation? Sentence13: No thanks. I also need a guesthouse to stay in in the north. It should include free parking and I need it to be in the moderate price range. Sentence14: The first train leaving after 16:15 is TR7634 which leaves Kings Lynn at 17:11 and arrives in Cambridge by 17:58. Will this work for you? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System