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: I will take the 5:21. Can you please give me the travel time, train ID, and price? Sentence2: All of them are in the Centre. Two are in the cheap price range and two are expensive. Would any of those suit? Sentence3: I will need something with free wifi and parking Sentence4: Thank you for being so informative. I have two trains available. Both will get you there before 08:15. One leaves at 05:21 and the other at 07:71. Which do you prefer? Sentence5: Are they in the east or centre? Sentence6: The travel time of the 5:21 is 49 minutes, arriving at 6:10. Train ID is TR2515 and the price is 12.80 pounds. How many tickets? Sentence7: Yes, the Alexander offers those. El Shaddai, Gonville Hotel, or the University Arms Hotel all do as well, if those sound more appealing. Can I book you a room? Sentence8: Glad I could help. Have a good day. Sentence9: Yes, I also need to find a train from cambridge to stevenage on Friday. I need to arrive by 08:15. Sentence10: There are 4 choices for you to choose from. May I recommend the Alexander Bed and Breakfast? Sentence11: I'm looking for lodgings offering free wifi and free parking. Sentence12: 138 perne road is the address. Is there anything else I could help you with? Sentence13: I really wanted a hotel in the moderate price range. Can you look in the east please? Sentence14: Certainly, which part of town would you prefer to stay in? Sentence15: I have 2 options here. Shall I book you for carolina bed and breakfast? Sentence16: Sure, could I get the address please? Sentence17: The centre, please. Sentence18: I don't want to book at this time, just the information. So that's all thanks! Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System