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'd love to help! Which day were you wanting to leave? Sentence2: TR4813 leaves at 14:32 and arrive an hour later. How does that sound? Sentence3: What station do you want to leave from? Sentence4: You're welcome. Goodbye Sentence5: I'm leaving on Sunday Sentence6: i'm looking for a train to cambridge Sentence7: There are 13 colleges located in the centre. Are you looking for somewhere with free entrance or is somewhere with a fee okay too? Sentence8: Yes, I'd like to leave for cambridge after 13:30 on sunday. Sentence9: I have many trains on that day. Do you have a preferred time for leaving or arriving? Sentence10: Your booking was successful. The total fee is 100.24 GBP, which is payable at the station. Your reference number is ALFLIJMY . Is there anything else I can help you with? Sentence11: That sounds great. I'll need 7 tickets. Sentence12: I need a train from broxbourne. Sentence13: Yeah, can to tell me about colleges in the centre of town? Sentence14: That should be it for today thanks! Sentence15: Sure! I suggest Downing College. I is located on Regent Street in the postcode CB21DQ. Their phone number is 01223334860. Sentence16: it doesn't matter. could you provide the postcode, phone number, and address for one that you suggest? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User