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: Yes please book the Hamilton Lodge. Sentence2: Yes, that will be fine. Sentence3: No that will be it. Thank you. Sentence4: Does the The Hamilton Lodge have both free wifi and free parking? Sentence5: The Hamilton Lodge would be perfect! It is a moderately priced 3 star guesthouse on the north side of town. Does that sound okay to you? Sentence6: I am looking for a guesthouse to stay at that has free wifi. Sentence7: Ok. Were you hoping for a particular price range or part of town? Sentence8: Great. Thanks so much for your help. Sentence9: What night would you like me to book for you, and for how many people? Sentence10: Okay. I was ablt to book you into there and your reference number is O4BPEOXQ . Sentence11: Is there anything else I can help you with today? Sentence12: I don't care about the part of town or the price range, but it needs to be a three star hotel. Sentence13: You are welcome. Enjoy your stay in Cambridge! Sentence14: I am sorry, the Hamilton is already booked. Would you be interested in the Bridge Guest House instead? It is the same as the Hamilton but is in the Southern area. Sentence15: Wednesday, 6 people, for five nights, please. Sentence16: Yes, it does. Do you want to make a reservation? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System