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: Could I get the phone number for old schools please? Sentence2: The number is 01223332320. Is there anything else I can help you with? Sentence3: Nothing in particular. Can you give a recommendation? Sentence4: What is the train ID and price please? Sentence5: TR8126 arrives at 17:44 would that work for you? Sentence6: What day and time would you like to leave? Sentence7: thank you I got all I need now Sentence8: We have a lot of things to see, did you have a certain type in mind? Sentence9: If your're in to architecture, you should see Old Schools. It is located on Trinity Lane and entrance is free. Sentence10: Thank you for contacting us and have a nice day. Sentence11: Hi, I need to spend some time in the town centre. Any interesting sights there? Sentence12: The train id is TR8126. Sentence13: I would be traveling on Thursday. I need to arrive by 18:15. Sentence14: Yes I need a train from Cambridge to Birmingham New Street to arrive 18:15. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System