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: TR1079 leaves at 09:09 would that work for you? Sentence2: You are very welcome! I hope you have a wonderful visit. Sentence3: I prefer one in the east. How about a 4 star hotel with free parking there instead? Sentence4: It's cheap. Would you like me to book a room for you? Sentence5: Can you tell me the price of the train ticket, please? Sentence6: Okay there is city centre north b and b would you like me to book it for you? Sentence7: The price of the train is 30.24 pounds. Sentence8: Hello! I am planning my trip to Cambridge and need information on places to stay. Sentence9: That works for me. Sentence10: I have several options in the cheap or moderate price range with parking and wifi. How does the leverton house sound? Sentence11: Can you please tell me how long your stay at the Leverton will be? What day will you be checking in and how many people? Sentence12: ok Id be happy to help with that would you like a guesthouse or Hotel Sentence13: I hope so. Can I call any time? Sentence14: We are available anytime, enjoy the rest of your day. Sentence15: There are no 4 star hotels in the east section of town that offers free parking. Would you like to search for a guesthouse? Sentence16: Yes please. I also need a train that leaves after 9:00 on sunday Sentence17: Thank you so much, that's all I need. Sentence18: What is the price range of the Leverton House? Sentence19: Actually, I apologize no need to book, I was just gathering information. But I do need information on a train from leicester to cambridge. Sentence20: Is there anything else I can help you with today, bookings or more information? Sentence21: Yes that is fine I need the price range as well. Sentence22: i don't have a preference. I would like a room with a 0 star and free parking Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User