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: If that has free wifi that'll work. Sentence2: Thanks! I'm also looking for a hotel near that restaurant. Sentence3: Yes, there is internet there. Would you like a booking then? Sentence4: They are expensive and can be reached at 01223866800. The address is 15-17 norman way, coldhams business park. Anything else? Sentence5: Yeah, could you book it for 8 people on Monday? I think 16:15 is when we want to be seated. Sentence6: No, that's all for me today! Thank you! Bye! Sentence7: The booking went through, your table is reserved for 15 minutes starting at 16:15. Reference number is BT75STQI . Sentence8: Okay, Yu Garden matches your specifications. Would you like me to book a reservation? Sentence9: Could you tell me the price, address and phone number? Sentence10: Can you help me find an expensive Chinese food restaurant? Sentence11: I'm interested in restaurants located in the East. Sentence12: What area would you like? There are nine results. Sentence13: I would recommend the Express by Holiday Inn Cambridge, should I book it for you? Sentence14: I hope you have a wonderful stay. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System