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: We have 4 available for you. The ADC Theatre is nice. Would you like more information about it or the others? Sentence2: Absolutely, I would love to help you with that! Do you have a specific area of town or a specific price point that you would like? Sentence3: The Avalon Guesthouse is in a very safe neighborhood in the north. Would you like me to book that for you? Sentence4: I have not decided yet. Sentence5: You and your party are booked at the Avalon. Your reference number A7T5CV0X . Can I help with anything else Sentence6: ADC Theater is located on Park Street in postcode cb58as. Is there anything else you need? Sentence7: Well that's ok we can book it later if you want. Is there anything else I can help you with? Sentence8: I am also looking for a nice theatre to visit in the centre of town. Sentence9: Yeah, could I get its address? Sentence10: No that was it. Thank you so much for your help. Sentence11: Of course I'd be happy to. How many people, when, and for how many days? Sentence12: Actually, I do believe I would like to book the Avalon Guesthouse. Can you help me with this? Sentence13: You're welcome. Enjoy your stay and visit to the theatre. Sentence14: Hi. Could you help me find a hotel for my trip? Sentence15: I would like a 4-star hotel in the north area. Oh, and no free parking. I'm concerned about safety when people park their cars next to the hotel! Sentence16: for 6 people for 5 nights starting on Monday Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System