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: sory can you teel as about star of the hotel and the place Sentence2: No, you've been fantastic. Thanks for all your help! Sentence3: I'll need a train that arrives by 10:15 and book for 6 people. Sentence4: Great, glad I could assist you. Have a good day! Sentence5: Any guesthouse with free parking and free wifi will work. Could you tell me where one is and the # of stars? Sentence6: On which day will you be travelling? Sentence7: No but I am needing a train to stevenage. Sentence8: I need to find a place to stay. I want a hotel with free parking and free wifi. Sentence9: Ok, I've booked booked passage for 6 on TR6334. Total price is 76.8 GBP. Reference number is 9H137NC2 . Can I help with anything else? Sentence10: We will travel on Friday. Sentence11: I can do that. What area are you staying in, and what days? Sentence12: I would recommend the Archway House, a moderately priced 4 star guesthouse on the north side at 82 arbury road. Would you be interested in making a reservation? Sentence13: There are 10 trains from Cambridge to Stevenage on Friday. They run every 2 hours, and the first one is at 5:21. What is your preference? Sentence14: I need the place to be a guesthouse. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System