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 will book you and get back to you, you are welcome Sentence2: We have 14 places matching your criteria. Lets narrow this down. Is there an area you prefer? Sentence3: King's Parade, cb21rh. Is there anything else you need to know? Sentence4: Perfect. That's all I need help with. Have a great day. Sentence5: You, too. Please call if you need anything else. Thank you for calling. Goodbye. Sentence6: Just the 4 of us Sentence7: There are quite a few for you to choose from. Did you have a particular area of town you would prefer to spend your time in? Sentence8: What time will you be traveling? Sentence9: Can I please get the reference number? Sentence10: No, I'm really not picky. j Sentence11: I'm traveling to Cambridge and looking for places to go. Are there any good colleges to see? Sentence12: Yes i need to book a taxi to leave the hotel by 22:00 and go to the attraction please. Sentence13: I would like to leave my hotel by 22:00. Would you mind getting the college address for me? Sentence14: The reference number is T8N3WK5T . Is there anything else I can help you with today? Sentence15: Yes, I would like to book it for 4 people for 5 nights starting from Tuesday. Sentence16: I'd be happy to help with that. May I ask if there is a price range or area you prefer? Sentence17: No, I just need help finding a place to stay. Sentence18: For how many people? Sentence19: Thank you, Yes, I will need a taxi from the Acorn Guest House to corpus christi college. I also did not get the college address. Sentence20: How about the Acorn Guest House? It is in the north area and has 4 stars with free internet and parking. Would you like for me to book it for you? Sentence21: The college address is king's parade cb21rh. The entrance fee is 2 pounds. Is there anything else I can get for you? Sentence22: No, any area will do. Can you recommend one? Sentence23: Your taxi has been booked. It will be a red Ford and the contact number is 07500369982. Sentence24: I sure can. How about corpus christi in town centre? Sentence25: Yes that sounds great. Can you give me the address for that college? Sentence26: I need a guesthouse in the moderate price range that includes free parking. Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User