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: Thank you for that information. Sounds like a good place. Sentence2: It's going to be from the restaurant to the hotel. I want to leave the restaurant by 4:45. Can you tell me what type of car and contact number? Sentence3: Yes, can you tell me a little about a hotel called Rosa's Bed and Breakfast? Sentence4: Okay, that's Restaurant Two Two, located at 22 Chesterton Road Chesterton cb43ax. May I help you book a table? Sentence5: It is located at 53 roseford rd in the south area, rated 4 stars, they have internet and parking. The phone number is 01223512596. Sentence6: Hmm, no thank you. I will need a taxi though, can you help me with that? Sentence7: I've booked your taxi! A yellow Tesla will pick you up at the restaurant at 4:45, and the contact number is 07207525802. Sentence8: I'd like to eat at the one that's in the north. Sentence9: Is there anything else I can do to help you today? Sentence10: Great! Thank you very much! Sentence11: There are two located in town. The Restaurant Two Two, which is in the north, and the Cote, which is located in the centre. Would you like to book a table? Sentence12: What is the best french expensive restaurant in town? Sentence13: They can be reached at 01223351880. Can I help you with anything else? Sentence14: No, that is it. Thanks. Bye. Sentence15: Would you like me to make you a reservation? Sentence16: Alright! Thanks for contacting Cambridge TownInfo centre! Have a great day! Sentence17: What is the phone number for the restaurant? Sentence18: Where are you traveling to and from? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System