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: great saint mary's church is an architecture attraction in the centre of town. Their phone number is 01223350914. Sentence2: I can't look at a hotel because you didn't read correctly and didn't select hotel. Thanks Sentence3: Yes they do. Should i book a room for you there? Sentence4: I would prefer a 4 star. can you recommend one and give me their price range? Sentence5: There are many! Do you need parking? Sentence6: I am looking for great saint mary's church in Cambridge Sentence7: Sorry! Do you have any 4-star guest houses available? I don't care about the price range, I just need to know what it is. Sentence8: That would be fine. Do they offer free parking? Sentence9: i got seven options one of them is cheap and the rest are moderate Sentence10: yes we have four of them in the area Sentence11: i could like to know what kind of attraction type it is, its area and phone number Sentence12: Cambridge has quite a few guesthouses. Do you prefer a particular area of town? Sentence13: Any price range will work, whatever you recommend. I need a 4 star guesthouse with free wifi. Just let me know the price range and of the have free parking. Sentence14: You've given me all the information I need today. Thank you. Sentence15: Is free wifi offered here? Sentence16: Do you have any in the north? Sentence17: your welcome, have a great day! Sentence18: Yes, it does have free wifi as well. Would you like to continue with the reservation? Sentence19: to narrow our options, can you tell me your price range? Sentence20: Okay, I'm also looking for a place to say. Needs to be a guesthouse with free wifi. Sentence21: I've located that for you. What would you like to know about it? Sentence22: Yes the north area please. Sentence23: I do need parking. Sentence24: Sure, do you care about price or star ratings? Sentence25: I would recommend acorn guesthouse. I hear it's quite nice. Would you like me to book it for you? Sentence26: Thank you, I'll take the moderate price that is 4 stars. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System