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: How does acorn guest house sound? They're on 154 chesterton rd and you'd get free parking, too. Sentence2: I'm looking for a hotel, is that something you help with? Sentence3: We have five hotels that meet that criteria. Are you looking for one in a particular area? Sentence4: Are any of them guesthouses? I would prefer a guesthouse. Sentence5: Yes please, could you try finding me a guesthouse in a moderate price range? Sentence6: Thank you for contacting us, have a nice day. Sentence7: There are some in the north and one in the east. Does either option sound better? Sentence8: Done! Your reference number is 1CD4LZ9R . Do you need assistance with anything else today? Sentence9: moderately priced with a 4 star rating. For 4 people for 5 nights on thursday. Sentence10: I'm looking for somewhere classy and expensive, where they don't skimp on amenities like free wifi. Are there any like that? Sentence11: There are 33 hotels, is there a specific area you are looking for? Sentence12: Okay great! Can you please book a reservation for 4 people for 5 nights starting on Thursday? Sentence13: There are no expensive guest houses. Sentence14: No that was all I needed thanks so much for your help. Sentence15: It doesn't matter. Whichever one you think is best. Sentence16: Do you want a hotel in the north or east? Sentence17: I would settle for a moderate price ranged one. Sentence18: No, they're all hotels. Would you like me to try a different price range? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User