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: How about the TR7852 train? It arrives in Stevenage at 14:10. Sentence2: I'm also looking a train. The train should leave on friday and should go to stevenage. Sentence3: Glad to give you the information, contact us again if you need more assistance. Sentence4: You don't need to book it for me, but could you tell me the travel time and price for that train? Sentence5: The price is 12.80 pounds and the duration of the trip would be 49 minutes. Sentence6: Yes I'd like to depart from cambridge and arrive by 16:15. Sentence7: Ah, yes. Cherry Hinton Hall and Grounds is an entertainment venue in the East. Would you like the phone number or postcode? Sentence8: Is there anything that arrives a little closer to 16:15 or is this the best option? Sentence9: Are you wanting to leave from Cambridge? Sentence10: Thank you so much, that's all I needed. Goodbye! Sentence11: Train TR8135 arrives by 16:10, shall we book that one for you? That is the closest one to that time. Sentence12: I am looking for an attracion called the cherry hinton hall and grounds. Sentence13: Sure! The phone number for the Cherry Hinton Hall and Grounds is 01223446104. Can I help you with anything else? Sentence14: Yes, may I please have the phone number? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System