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: Can you please give me the travel time. Sentence2: The TR4828 leaves Norwich at 14:16 and arrives in Cambridge at 15:35 on Friday. The price is 17.60 pounds. Would you like me to book it for you? Sentence3: You're welcome. Have a great day! Sentence4: That doesn't matter. I would like a 4 star hotel though, please. Sentence5: That is all. Thank you! Sentence6: Also looking for a train leaving Norwich after 14:00 and arriving in Cambridge on Friday. Sentence7: Okay, will that be all today or is there anything else I can help you with? Sentence8: Does that place have free wifi? Sentence9: What price range do you prefer? Sentence10: The travel time is 79 minutes. Would you like me to book it? Sentence11: no I don't need you to do that, thank you Sentence12: Can you tell me the address to the police station in Cambridge? Sentence13: Yes it has wifi. Would you like to know anything more? Sentence14: Would a and b guest house work for you? Sentence15: The address is Parkside, Cambridge, postcode CB11JG Sentence16: You've been booked at A and B Guesthouse. Your reference number is I23Q30PH . Can I be of further assistance today? Sentence17: That is sufficient, please book me for 8 people, 5 nights staring on friday. Sentence18: Thanks. Would you be able to help me find a place to stay in the east side of town? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User