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: You're booked at Ashley Hotel! Your reference number is SPSKXM90 . Sentence2: You're very welcome. Please contact us again, if we can be of further service. Sentence3: I want to commute between the hotel and restaurant. I need to be at the restaurant by the booked time,12:45. Sentence4: Thank you! I also need a taxi to get to the restaurant. Sentence5: I also need a hotel that has free parking and wifi. Sentence6: You are all booked at Hakka, located on Milton Road in Chesterton. Great place. Your reference number is 76N3GIHO and the table will be held for 15 minutes. Sentence7: Sure! Do you have a time preference? Sentence8: Were you looking for a hotel with a guesthouse? Sentence9: yes please, for 6 people starting thurs. for 2 nights, I need the confirmation # too please Sentence10: Is it a guesthouse or a hotel? Sentence11: Ok! I booked that for you! Your car will be a red volvo. The contact number is 07919056928. Is there anything else I can do for you? Sentence12: No, that should be all. Thank you. Sentence13: Ashley hotel offers parking and wifi and is within moderate pricing range. Would you like me to book a room for you? Sentence14: I'm here to help! There are 2 expensive restaurants and 1 moderate price. Do you have a preference? Sentence15: I have 2 hotels that are available. Would you like to book one? Sentence16: I need to book for 6 people, 2 nights, starting on thursday. Sentence17: I need to find a Chinese food restaurant to dine at located in the north. Can you help? Sentence18: Nah, just book me a table at your favorite! I need it at 12:45 on Thursday. Table for 6, please. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User