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 thank you but I do need a train. Sentence2: depart from cambridge at 9:00 and arrive london liverpool street on Sunday for 6 people Sentence3: I have Indian restaurants in all areas. Do you have a preference of which one? Lets do this and then we can work on the train/ Sentence4: I don't have any Polynesian, but I do have 14 Indian. What area of town would you like? Sentence5: That's all I need today. Have a great day Sentence6: Okay! From where to where? Sentence7: I have found many trains leaving from Cambridge. Can I please get a departure and arrival time, and destination? Sentence8: There are a bunch of restaurants for you! Do you have a certain price range or food type you prefer? Sentence9: Can you please recommend one and provide me with their phone number and area they're located? Sentence10: the total fee is 79.67, Reference number is : Z51SW54Y . Sentence11: I will be leaving from Cambridge. Sentence12: There are no trains leaving at 9:00. Would you be interested in the one leaving at 7:59 or 9:59? Sentence13: I can book the TR0995 which leaves Cambridge at 09:59. Shall I book it for six people? Sentence14: I just need to depart after 9:30. Sentence15: please get phone number and area.I am also looking for a train. The train should depart from Cambridge and should leave after 09:30 Sentence16: I would like it on the expensive price range please. Sentence17: I found some quite nice choices for you. Do you have a cuisine preference? Sentence18: The north part of town is fine. I need the phone number and area for the place after you find it. Sentence19: My area is flexible. What is available for an expensive indian restaurant. It can be in any area. Sentence20: Yes, that would be wonderful. Sentence21: I have the cocum located in the west at 71 Castle Street City Centre. Would you like reservations? Sentence22: Have a safe trip. Sentence23: I am sorry but there are no Indian restaurants in the North. Would you like another area? Sentence24: which side of town do you prefer? Sentence25: Hi. Can you help me find a restaurant? Sentence26: he restaurant should be in the expensive price range and should serve polynesian food. If there is no such restaurant, how about one that serves indian food. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User