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: The first train available leaves at 09:54 and arrives at 10:43. Will that work? Sentence2: The price is 12.80 pounds. Sentence3: I am looking for a place to stay that has free wifi and is in the expensive price range. Sentence4: I think so, but can you confirm the price first? Thank you. Sentence5: I have five hotels that all fit that criteria. Anything else you're looking for in a hotel or should I just book one of those for you? Sentence6: I also need a train departing from Stevenage leaving after 08:45 Sentence7: There is also a train that leaves at 07:54, would you like that one? Sentence8: What is your destination? Sentence9: Thank you for using our system today! Sentence10: I just need to have free parking. Sentence11: OK, thank you. That is everything that I need. Sentence12: Yes, the price is still 12.80. It arrives at 8:43. Sentence13: There are 5 hotels that meet your criteria. Do you have a preference on what area of the city you'd like to stay in? Sentence14: I don't need it booked. Can I get the phone number and address of an expensive hotel with free wifi and parking? You choose. Sentence15: The phone number for Gonville is 01223366611, and the address is gonville place Sentence16: Cambridge on Friday. Sentence17: Is there any earlier arrival times? Sentence18: Could you please give me the arrival time and confirm that the price is still 12.80 Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User