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: Yes I'll also need a train to Cambridge. Sentence2: I don't need you to book that, but I will need to know the departure time, please. Sentence3: I need to arrive by 14:15. Sentence4: To Cambridge, on Monday. I will be leaving Birmingham new street. Sentence5: I misspelled the place it is sesame, can you look that up again and book 3 poeple at 17:00 on monday if available? Sentence6: TR3387 arrives in cambridge by 13:23. Price is 75.10 pounds. Will that work for you? Would you like me to books seats? Sentence7: okay the first train leaves the station at 5:40 the last 09:40 Sentence8: I'm ready. Sentence9: Where would you like to go? Sentence10: I'm sorry but I was unable to find the restaurant you requested. Is there a type of food you were thinking about having? Sentence11: Ok! Have a great day! Sentence12: Gladly. I have a table reserved for you at the Sesame Restaurant and bar for Monday at 17:00. Your reference is 5OEIV10L . Is there anything else I can help you with? Sentence13: It is the Seasame Restaurant and Bar. Sentence14: I have the name of a restaurant that I need some help finding, whenever you're ready. Sentence15: The TR3387 leaves at 10:40. Sentence16: Great, thanks so much for your help. That's all I need today. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User