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: It looks like we'll have a total of 5 people in our party. Sentence2: I need it to b moderately priced and include free wifi. Sentence3: It doesn't matter as long as it is near the hotel. Sentence4: I have book a room for 5 people beginning on Sunday and continuing for two nights. Your reference number is 2KMVO8NF . Can I help you find anything else? Sentence5: What kind of food are you interested in? Sentence6: Booking was completed! A grey Ford will pick you up at 15:15 in front of the guesthouse, contact number 07097490762. Can I assist with anything else? Sentence7: Can we try in the north instead? Sentence8: What is your price range? Sentence9: Actually just one taxi was enough, thank you. That's all I need. Sentence10: I would like to find Asian Oriental. Sentence11: Okay, great! How many people will be staying? Sentence12: Where would you like the 2nd taxi to take you? Sentence13: I have 2. The alexander bed and breakfast and the el shaddai. Both are in the cheap price range. Sentence14: Yes, Sunday, 5 people for 15:30. Sentence15: you are welcome and thank you too Sentence16: have a lovely day. Sentence17: Alright, can you book me a room please. I want to stay on Sunday for 2 nights. Sentence18: We have 8 moderately priced guesthouses in the north. Might I suggest the arbury lodge guesthouse? Sentence19: I'm sorry, but there are no moderately priced hotels that fit your criteria. Would you like me to look for something moderately priced in a different part of town? Sentence20: Thank you! I would also like a taxi to get from the guesthouse to the restaurant. Sentence21: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1H1XOCSA . Sentence22: I need a guesthouse in the center of the town please. Sentence23: And you have a lovely day as well! Sentence24: i also want to book a taxi to commute between the two places. Sentence25: Saigon City is located in the north. Would you like me to book you a table? Sentence26: I am looking for a place to dine. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System