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: Unfortunately, I don't happen to have a listing that matches your request. Would you like me to try a different price range or cuisine style? Sentence2: You're welcome. Enjoy your meal! Sentence3: No, that's it. Thanks a bunch. Sentence4: I want a restaurant that serves molecular gastronomy food. Sentence5: Yes, there are 3 Chinese restaurants that are in the cheap price range. I would recommend the Golden House. Would you like for me to book you a table? Sentence6: The Golden House is located at 12 Lensfield Road City Centre. Their postcode is cb21eg. Can I help you with anything else? Sentence7: Their phone number is 01842753771. Is there anything else I can help you with? Sentence8: Actually, scratch that, I don't want to book the restaurant. Could you give me the phone number for the Golden House? Sentence9: Can you give me the address and postcode as well? Sentence10: Yes, please book it for around 20:00 for 3 people Sentence11: There are several options available in the town centre. Is there a particular cuisine that you would prefer? Asian, chinese, indian, italian, mediterranean, modern european, portuguese, or spanish? Sentence12: What day would you like to book? Sentence13: I am looking for a cheap restaurant in the centre of town. Sentence14: Are there any Chinese restaurants? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User