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 area doesn't matter, could you recommend a place? Sentence2: Is there a specific area you would like to stay in? Sentence3: Can you just give me the price on it please? Sentence4: The TR4076 leaves at 13:29, and arrives at 14:07. Would you like to book it? Sentence5: Yes, I'll need a train to Cambridge that same day, please. I'll be leaving from Bishops Stortford after 12:45. Sentence6: The price for this train ticket is 10.10 pounds. Do you need anything else? Sentence7: I would like a place with a 4 star rating. Sentence8: Alright. Have a great day. Sentence9: There are 21 4 star hotels with free wifi, would you like me to narrow that down with any other details? Sentence10: Did you want it to be in a specific area of town? Sentence11: No, that's it. Thanks! Sentence12: Could you just pick one and book it for 6 people for 2 nights from Friday? Sentence13: need a hotel with free wifi please Sentence14: Huntington Marriott Hotel, 2 nights for 6 people beginning Friday. Your reference number is WQ7SC2AD . Is there anything else I can help you with today? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System