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: I'm sorry not hotels, guesthouses please. Sentence2: Honestly, I would prefer if you could suggest one as long as its moderately priced. Sentence3: I have many listings,could I get what star rating to would preferred? Sentence4: That's all I needed. Thank you. Sentence5: I am unable to book during that time slot on Thursday. Would you like to try a different time on Thursday or maybe a different day? Sentence6: The india house is in the expensive price range and located at 31 Newnham Road Newnham. Sentence7: Thanks. Could you reserve a table for 3 people at 16:30 on Thursday? Sentence8: Booking was successful. You will arrive at the India House by 15:30. Sentence9: How about 15:30? Sentence10: Yes, actually. I'll be needing a taxi between those two locations. Please make sure they can have me at the restaurant by my reservation time. Sentence11: There are no guesthouses in the expensive range in the north area. There are five options, in the moderate range, any other preferences? Sentence12: You're welcome. Have a nice day. Sentence13: That would be fine. Could you also find out some information about the india house restaurant? Sentence14: I'm sorry, but there are no expensive hotels in the north area. Could I check for one in the moderate price range for you? Sentence15: Alright. Does the acorn guest house sound okay? It's 4 stars with free internet and parking. Sentence16: Yes, please check one in the moderate range. Sentence17: Booking was successful. Your Reference number is : SP0ZTZU8 . Is there anything else I can help you with today? Sentence18: Hello, I'm looking for a hotel in the north, and I'd like the more expensive range please. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User