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: I would also like a train that depart from ely and arrive by 13:00. Sentence2: On what day will you be traveling? Sentence3: no thanks. I just need the train ID, travel, and departure time Sentence4: Have a nice day! Sentence5: There are several museums, is there a particular area you were interested in? Sentence6: the latest train would arrive at 11:52. would you like me to book you a reservation? Sentence7: The train ID is TR0813. The departure time is 11:35 and the total trip time is 17 minutes. Can I help you with anything else? Sentence8: I would be leaving Thursday and going into Cambridge. Sentence9: No not really. I just need to get a phone number, postcode, and address for the one we'll be attending. Do you recommend one for me? Sentence10: No thank you that will be all Sentence11: I am interested in museums, which ones are in operation in cambridge? Sentence12: I think you will enjoy the byard art museum. It is located at 14 king's parade. The postal code is cb21sj and the phone number is 01223464646. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System