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: Ok. Take care have a nice day. Sentence2: Well, I am here to help, but I need to know what you want me to look for. Sentence3: Okay, how about ugly duckling? Sentence4: Your reservation is all set. Your reference number is 3FF42HU1 . Is there anything else I can help you with? Sentence5: I found 9 great choices. Is there a specific area of town you want to be in? Sentence6: Great. Can you book for five people and give me the reference number for that? Sentence7: There is a 13:21 that would get you there by 15:06. How does that sound? Sentence8: I have that booked for you with a reference number of 1XMFVN8T . Is there anything else I can do for you to make your trip as easy as possible? Sentence9: The train should leave after 13:15 and should leave on saturday. The train should depart from cambridge and should go to leicester. book for same number of people Sentence10: That sounds great. Can you book a table for 5 at 13:15? Sentence11: I am planning a trip in Cambridge Sentence12: Pardon my mistake, my migranes make my head a little foggy at times, can you help me find an expensive chinese place to eat at? Sentence13: It doesn't matter. I trust your judgment. I need a reservation for friday. Sentence14: That's all I needed today. Thanks for your help. Goodbye! Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System