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: There are 33 hotels to choose from. What type of hotel do you prefer? Sentence2: I need the price range, area, and star of the hotel. Sentence3: that is all i needed for today. thanks for helping Sentence4: On second thought, I believe I'll wait on that reservation. Sentence5: Thank you for contacting us and have a nice day. Sentence6: Can you book it for me and get a reference number ? Sentence7: Okay! You can leave at 19:16, or on one of the 4 other other trains that depart every hour after. Which would you like? Sentence8: Yeah, I can definitely do that. What day would you like the reservation for? Sentence9: That train will be fine. Can I please get the train ID, arrival time and travel time? Sentence10: Hi, I could definitely use some help finding information on a particular hotel. Sentence11: Sure, the train id is TR2493, the arrival time is 20:35 and the train ride is 79 minutes long. Do you need me to book you a ticket? Sentence12: Yes, I need a train leaving after 18:30 Sentence13: It is located in the centre and is in the expensive price range. It is a 3 star hotel. Sentence14: ok, is there anything else i can help you with today? Sentence15: sure, what would you like to know? Sentence16: leaving norwich going to cambridge on thursday Sentence17: I have over 2800 entries under your specification. Would you like to narrow it down? Sentence18: I am interested in the Gonville Hotel. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User