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: Thanks, what is their address? Sentence2: Which ever you think is the best, please give me the address. Sentence3: Oh no. I had my heart set on Jamaican. Can you please verify? I'll have to think a minute on another cuisine. Sentence4: Is there anything else I can do for you today? Sentence5: No thanks. You've been very helpful. Goodbye. Sentence6: i need expensive, please. Sentence7: Yes, I need to make sure I leave by 17:00. Sentence8: Are there are jamaican restaurants in the centre part of town? Sentence9: There are 6 expensive Indian restaurants in the city. May I recommend Curry King? Sentence10: There are plenty of those to choose from. Do you have a price range? Sentence11: Great! I am also looking for a train going to Broxbourne on Thursday. Sentence12: Great, it leaves after 8:15, the time I should have told you in the first place. What is the travel time on TR2125 please? Sentence13: their address is 5 Jordans Yard Bridge Street City Centre. Sentence14: The travel time is 60 minutes. Would you like me to book a ticket? Sentence15: I recommend TR2125 that leaves at 09:01 and arrives at 10:01 Sentence16: I would suggest curry king. Sentence17: No that is all i need, thank you Sentence18: Well bummer. How about a restaurant that serves Indian food instead? Sentence19: Thank you for calling. It was nice speaking with you! Have a nice day! Sentence20: I am unable to find any Jamacian restaurants in town. Sentence21: Regretfully, no. Is there another cuisine you would enjoy? Sentence22: Yes, I am departing from Cambridge. Thanks! Sentence23: Okay! From Cambridge? Sentence24: There are several trains available. Do you have a preference on departure or arrival times? Question: Who has spoken the sentence 23? (A) User (B) System
Output: 


Answer: (B) System