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: Of course, the address is 191 Histon Road Chesterton. Would this restaurant work for you? Sentence2: The Acorn guesthouse is located at 154 chesterton road, the postcode is cb41da, and the phone is 0122335388. Shall I book a room for you? Sentence3: I want one that serves Chinese food, one that's in the same area as the acorn guesthouse. Sentence4: Thank you so much, have a great day. Sentence5: That will be fine can I get the information for them please. Sentence6: Can I help you with anything else? Sentence7: I would like to stay in the north area and I have a moderate price range. Do you think you can help me? Sentence8: I need to find a hotel to stay at that has a 4 star rating and includes free wifi. Sentence9: Ok, there is acorn guest house as well as 5 others for you to choose from. Sentence10: Not yet, I'm also looking for a place to eat Chinese food. I need it in the moderate price range as well. Sentence11: I have many options for you! Is there a certain area you need, or a certain price range? Sentence12: I have many options. do you have a preference for parking? Sentence13: Yes, that's perfect. Thanks for your help. Sentence14: I have 4 options available. 3 are in the centre and 1 is in the north. Do you have a preference? Sentence15: I need the address please Sentence16: the golden wok is the only one. When would you like the table and for how many? Sentence17: That's all I need, thanks so much for your help! Have a great day! Sentence18: Yes, I would like free parking. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System