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 will be departing after 09:45 and going to peterborough. Sentence2: Yes I can. Would you like the phone number or address? Sentence3: ok, TR9803 leaves at 10:06. do you need a ticket? Sentence4: I am looking for Kings Hedges Learner Pool. Can you help me with that? Sentence5: Yes, please. I need the area and phone number. Sentence6: Okay, thank you so much for your help. Sentence7: If you need anything else don't hesitate to contact our help desk again! Sentence8: Could you tell me the travel and arrival time of this train? Sentence9: Sure, it leaves Cambridge at 10:06 and gets to Peterborough by 10:56. 50 Minutes total. Sentence10: What time will you be departing? Sentence11: NO thank you. That's all I needed. Sentence12: Would you like me to book the tickets for you today? Sentence13: I also need to find a train out of here for Saturday. Sentence14: Absolutely! It's located in the north and the phone number is 01223353248. Can I help with anything else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System