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: The area isn't important but we also need free parking. Sentence2: I have 21 guesthouse. Is there a certain area or pricerange you would prefer? Sentence3: The first train leaving after 13:15 is the TR3066, departing Cambridge at 13:34, arriving Peterborough at 14:24. Would you like to reserve a seat on this train, or keep looking? Sentence4: Sure, what area of town are you interested in? Sentence5: That one sounds good. Can I book it for 8 people for 2 nights starting Saturday? Sentence6: I was able to book 8 train tickets for you at the price of 132 GBP, which is payable at the station. The reference number is 66HG2U6U . Sentence7: Thanks so much. Thats all I need. Sentence8: Hi, could you find me a guesthouse that includes wifi? Sentence9: What day are you wanting to go? Is there a certain arrival or departure time you're looking for? Sentence10: yes. please reserve seats for 8 people Sentence11: I was able to book acorn guest house, reference number is SM1GU7E5 Sentence12: Thank you and have a great trip. Goodbye. Sentence13: Thanks. Sound like a great place. Can you help me with a train to peterborough. Sentence14: I want to leave Cambridge on Monday after 13:15. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System