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: Thats all I need today, thank you. Sentence2: I recommend the Holy Trinity Church on Market Street. Can you give me a day and time you need a taxi? I can get one for you. Sentence3: Yeah, preferably in the center of town. Sentence4: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence5: I can definitely assist you. Did you have a type of cuisine or price range in mind? Sentence6: There are 21 different options in the centre of town. If you are looking for a great recommendation, I suggest The Cow Pizza Kitchen and Bar. They serve amazing food. Sentence7: Something moderately priced. I don't have a cuisine preference. Sentence8: Hello there. I am traveling to Cambridge and am most looking forward to trying some of your local restaurants. Can you help me find a good one? Sentence9: I have the taxi reserved for you. It will be a white Honda. The contact number is 07053284393. Can I help with anything else today? Sentence10: We have lots of attractions in the Centre. What type are you looking for? Sentence11: I have 31 moderately priced options available. Do you have a particular area you're interested in? Sentence12: any that you willrecomend. i also want a taxi Sentence13: Excellent that sounds great. I'm also looking for something to do. Can you find me an attraction in the same area of The Cow Pizza Kitchen? Sentence14: I need the taxi to commute between the restaurant and attraction. I need to leave the attraction by 04:30. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User