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 are welcome. Have a lovely day. Sentence2: That would be the El Shaddai, would you like to book there? Sentence3: It has free parking with a 4 star rating Sentence4: Great. That's actually all I need today. Thank you for your help! Sentence5: For which day would you like the reservation? Sentence6: I'm looking for a hotel with 0 stars Sentence7: The price range is cheap, and the address is 41 warkworth street. Sentence8: I'm looking for a restaurant in the centre of town that's in a moderate price range. Do you have any recommendations? Sentence9: There are 2 guesthouses meeting your needs. One in the north and one in the centre of town. Which would you prefer? Sentence10: Yes, please book that room for me. Sentence11: For how many people would the reservation need? Sentence12: Can you let me know if El Shaddai has free wifi? Sentence13: Does the hotel include free parking and does it happen to have a 0 star rating? Sentence14: Alright your reservation is at Yippee Noodle Bar, 40428 King Street City. Confirmation number is 2BGIWWZ6 . I'm also showing an opening at Alexander Bed and Breakfast. Is that okay? Sentence15: I need it for 4 people and I would like a confirmation number. Also, can you help me find a guesthouse hotel in the area with free parking? Sentence16: I'd prefer the one in the centre of town . Sentence17: Yes it does. Sentence18: Will this just be for you? Sentence19: That works okay. Can I get the price range and address? Sentence20: This sunday at 15:45. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System