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: Train TR6799 leaves Cambridge at 13:21 and arrives at Leicester at 15:06. Will that work for you? Sentence2: Yes, can I get the postcode and entrance fee? Sentence3: No thank you, looking forward to my time here. Have a great day. Sentence4: I have a listing for riverboat georgina in the north is that okay? Sentence5: I need the train to leave after 13:00 on Monday. Tell me if any fit this description. I need to know the arrival time and train ID as well. Sentence6: Hello, I would to know about some places to go in Cambridge. I'd like to do something on a boat, if possible. Sentence7: Ok, there are four options. Two are in the centre, one is in the east and one is in the north. Sentence8: Yes, please enjoy your time in Cambridge. Thanks for letting me help you today. Bye. Sentence9: Yes, the postcode is cb43ax and the entrance fee is not known at this time. Sentence10: The train id number is TR6799 and the arrival time is 15:06. Is there anything else I can assist you with today? Sentence11: Thank you I also need a train that will depart from cambridge and should go to leicester. Sentence12: I have several trains available. What day will you be traveling and when would you like to leave and arrive? Sentence13: Let's try the one in the north. What is the entrance fee? Sentence14: Yes, that's perfect! Could I have the arrival time and train ID please? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User