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: You're welcome. Enjoy your stay Sentence2: That sounds good, I need the address, phone number and postcode. Sentence3: So sorry we have no multiple sports in the centre of town. Sentence4: I am looking for a place that has multiple sports in the centre of town. Do you have any suggestions? Sentence5: Yes they do have free parking. Would you like me to book a room for you at the Belfry? Sentence6: Yes, there are a few. I personally like Downing College on Regent Street. It is free. Sentence7: The address is regent street postcode cb21dq and the phone is 01223334860. Sentence8: I would prefer the cheaper one. Can you tell me if they offer free parking? Sentence9: No, thank you. That is everything I needed. Sentence10: Will it just be you staying or do I need to book other guests as well? Sentence11: Yes, I need you to go ahead and book that for me. I would like to stay for two nights starting on Sunday. Sentence12: Actually, just send me the address. Thank you. Sentence13: How about a college in the centre of town? Sentence14: Great, that's helpful, thanks. Can you also help us find a hotel? We'd like to stay on the west side, and we really dislike guesthouses. What can you recommend? Sentence15: I'm not quite sure yet, could I get the address there please? Sentence16: The address is back lane, cambourne. Can I get you anything else? Sentence17: the cambridge belfry is on back lane, cambourne, cb236bw. Their phone number is 01954714600. Can I help you with anything else? Sentence18: We have two hotels on the westside, the cheap Cambridge Belfry and the expensive Huntingdon Marriott. Which would you like? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User