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 am getting the information up now, what day this week will you need that? Sentence2: Yes, they do! Would you like to book a room? Sentence3: Yes, go ahead and book this. I will need accommodations for 7 people. We need to book for 2 nights, starting on Sunday. Sentence4: Wow, there are 29 hotels that meet your criteria. Do you know which area of town you'd prefer to stay, or if a guesthouse is preferred over a hotel, or even how many stars or a price range of a possible location? There are so many to choose from! Sentence5: express by holiday in cambridge is the only hotel in the east it is expensively priced, do you want to go with that or include guestouses in a search? Sentence6: Enjoy your stay in Cambridge! Sentence7: 7 people, please. Sentence8: Your booking was successful. Your reference number is MULV4YIP . Sentence9: Can you help me find a train departing peterborough arriving by 14:30? Sentence10: No, I want to keep it in the type of hotel. Does this hotel have free wifi? Sentence11: On Sunday please Sentence12: Thank you . That is all I needed. Have a nice day. Sentence13: Train TR3782 fits your needs. For how many people ? Sentence14: Perfect. Can you also help me find a hotel while we're there? It should also have free parking. Sentence15: Yes your booking was successful and your reference number is 5WS52ANO . Sentence16: I would like to find a hotel on the east side. I need parking but wifi is not necessary. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User