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: There are 11 museums in the center. I recommend the whipple museum of the history of science for hours of fun. Do you need more information? Sentence2: Wait, I need to find a museum in the centre first, then i can get a taxi. I'm very sorry, I got a little ahead of myself. Sentence3: I want to leave the whipple museum of the history of science at 05:30 to go to the alexander bed and breakfast, please. Sentence4: I don't have a certain area in mind. But, I would like it to have 4 stars and that it is a guesthouse and not a hotel. Sentence5: Yes, can I please have the phone number for the Whipple Museum of History? Sentence6: i need to book a car Sentence7: Yes. Book for 5 people, 4 nights and starting on Tuesday. Sentence8: Do you have a price range? The prices range from cheap to expensive. Sentence9: The phone number to the whipple museum of the history of science is 01223330906. Can I assist you with anything else, today? Sentence10: I'm sorry, can you be more specific? Our city is divided into North, West, East, South and Centre. Sentence11: Alright, shall I call a taxi or a bus for you? Sentence12: Okay, thank you! Will you please book it for 5 people for 4 nights, starting Tuesday? Sentence13: Ok, and what part of the city would you like to stay in? Sentence14: Yes, you will be picked up in a black honda and their contact number is 07420056662. Is there anything else I can help you with? Sentence15: what will be your destination? Sentence16: OKay. I will work on getting this booked and be right back with you. Sentence17: Downtown. In a guest house maybe. Sentence18: No thank you. Thanks for everything! Bye! Sentence19: Okay, let's book the taxi now. I need to get between the two places. Sentence20: Just to clarify. You need to be picked up at the Whipple Museum of History at 05:30. Your drop off point is the alexander bed and breakfast. Correct? Sentence21: Ok, the booking was successful. Reference number is : NMT6HX2V . Can I help with anything else? Sentence22: Yes expensive and also looking for places to go nearby Sentence23: The only 4 star guest house I found in the centre of town is a cheap one- the alexander bed and breakfast. Shall I book that for you? Sentence24: great, i have 18 options for you! Sentence25: i need a place to stay Sentence26: Yes that's correct. Can I also have the phone number and type of car that will be picking me up. Sentence27: a taxi that should leave by 05:30 Sentence28: You are very welcome. It has been a pleasure assisting you today. Enjoy your trip and have a great day. Goodbye Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User