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: I have no preference. Please make a recommendation and book a room for me. Sentence2: I would prefer it to include both. Thanks for asking. Sentence3: Do you have a particular attraction or type of attraction in mind? We have boats, colleges, and a great deal of architecture. Sentence4: Okay I recommend the acorn guesthouse. Is it okay to book there? Sentence5: The phone number is 01223295264 and the address is 23 high street, fen ditton. What else can I do for you? Sentence6: No thank you that is all. Sentence7: Okay what area would you like to stay in? Sentence8: I would recommend the Lynne Strover Gallery. Admission is free. Sentence9: I need the reference number too. I am not particular as to where, as long as it is near Cambridge. Sentence10: There are over a dozen to choose from. Are you looking for a particular star rating? Do you prefer a guesthouse or a hotel? Sentence11: Is parking and free wifi important to you? Sentence12: plese get me the phone number and address Sentence13: Your welcome, enjoy your stay in Cambridge. Sentence14: Okay! I have booked you and your reference number is 5X4PO32W . Sentence15: If the acorn guesthouse is in the moderate range with wifi and parking, please book the above nights for me, please. Sentence16: Can I look up anything else for you? Sentence17: Thanks, take care. Sentence18: Please focus your search to the west. Sentence19: Could you help me with some information about places I can go in town? Sentence20: Yes I need a place to stay that is a hotel that is moderate and I need it for 5 nights for 1 person from Tuesday. Sentence21: I have several museums available. What part of town would you like? Sentence22: I want to go to a museum. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System