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: No, thank you. You have been very patient and helpful. Have a nice day. Bye. Sentence2: Okay that sounds great. Sentence3: Thank you so much for calling. It has been my pleasure. Have a great trip and a wonderful day. Goodbye. Sentence4: I don't have an area preference but it should have a star of 4 and have free parking. Sentence5: sure it is a guesthouse and the postcode is cb13js, anything else today? Sentence6: I'm sorry, I don't understand your response. Could you please verify from where you are leaving and where you are going? Sentence7: TR9999 leaves at 12:09, travel tine is 105 minutes, cost is 30.24 pounds per person. Any other questions, Sentence8: How many people and how many nights should I make the booking for? Sentence9: I need help finding a train from leicester to cambridge, departing on sunday after 11:45. No reservation, just need to know travel time, arrival time, and price please. Sentence10: its a guesthouse Sentence11: What sort of hotel is it? Guest house or hotel? Sentence12: Yeah, I'm hoping to find a cheap place to stay. Can you help with that? Sentence13: Yes please go ahead and book it. I'm also looking for a train. Sentence14: Would you like me to make a booking for you? Sentence15: cambridge, travel time, arrival time, and price please Sentence16: I just need the postcode and hotel type. Sentence17: You earlier mentioned you need train information. Starting from what city and ending at what city? Sentence18: That is all, thank you so much Sentence19: what's the postcode? Sentence20: Sure. How about the Allenbell? It is in the east and fits all of your needs. Sentence21: Of course! What part of town would you like to stay in? Sentence22: The postcode is cb13js. Would you like a reservation? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User