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: No but would you like to try another location ? Sentence2: Could you please book a reservation for me? We need a table for 8 at 12:00 on Wednesday. Sentence3: Do you have a particular area and food type or price range in mind? Sentence4: Please book 8 tickets on the first train leaving after 12:45 on Thursday. Sentence5: Alright, I booked it and your reference is BIL1S6PI . Anything else I can do? Sentence6: I need a train, going to Stevenage on Thursday and it needs to leave after 12:45. Sentence7: I can help what day would you like to depart? Sentence8: There are five trains that leave after 12:45. Do you have a time in mind that you would like to leave at? Sentence9: Thanks for your help, that will be all. Sentence10: I would prefer French. Sentence11: I would like to leave on Thursday. Sentence12: I am looking for information in Cambridge. looking for a place to dine. Sentence13: We have five restaurants to choose from. Would you prefer Chinese, French, European or Asian Oriental food? Sentence14: I want somewhere expensive in the north Sentence15: Yes your reservation number is 1YR1NTHK . Sentence16: restaurant two two is an expensive french restaurant in the north part of town. Can I help you with anything else? Sentence17: Great, thanks. I also need to find a train to Stevenage. Sentence18: You are very welcome! Goodbye now! Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System