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 23 museums in cambridge. Are you interested in a particular type of one in a certain part of town? Sentence2: You're welcome, glad I could help. Sentence3: I would recommend TR4859 which leaves Cambridge at 15:59 and arrives at London Liverpool Street at 17:27. Sentence4: Great, thanks, that's all I need! Sentence5: Ok, lets get you set up, where are you going and on what day? Sentence6: You're all booked. TR4859 for 6 people will be 79.67 GBP. Your reference number is CTETVS75 . Is there anything else I can help you with today? Sentence7: I need a train to leave from cambridge after 15:30. Sentence8: That sounds fine. Can you reserve 6 tickets for me please? Sentence9: I am looking for places to go in town. The attraction should be in the type of museum Sentence10: It is located in the east and the postal code is cb13ef. Sentence11: That sounds great! What area and can I get the postcode? Sentence12: I am very partial to the Cambridge Artworks museum located at 5 greens road and admission is free. Does that sound good? Sentence13: Not really. Pick the best one for me! Sentence14: I will be leaving on saturday and going to london liverpool street. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System