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: Thank you. That is all for now. Sentence2: Sorry, I would like that for Thursday. Sentence3: I really just want a place in the centre that is also moderate in price Sentence4: I would like to find a 1 star hotel to stay at that includes free parking. Do you know of any? Sentence5: Would you like to try an Asian restaurant? Sentence6: I also need to find somewhere to eat. Sentence7: That does not matter but I want it to have 4 stars. Sentence8: There are many in the moderate price range. What area of town would you like to be in? Guesthouse or hotel? Sentence9: Not yet. Could I get the address? Sentence10: You are welcome. Enjoy your visit to Cambridge, bye Sentence11: What day would you like that booking for? Sentence12: I would recommend the ayelsbray lodge guest house, would you like me to book you? Sentence13: yes its 154 Chesterton Road , is there anything else ? Sentence14: Sure! Could you book it for 8 people at 12:15? Sentence15: We a many great restaurants in town! Is there a particular type of cuisine you would like? Sentence16: The table will be reserved for 15 minutes at the yippee noodle bar. Reference number is : SYZP8RAY . Sentence17: Well could we look for a hotel in the moderate price range? Sentence18: There is no match for those criteria Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System