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: Oh yeah, I just remembered, I'm going to need a taxi to commute between these two locations. Sentence2: I want to confirm you are departing byard art to arrive at Gandhi restaurant by 20:00. Is this correct? Sentence3: It would be for Saturday for 4 people at 20:00 please. Sentence4: please give me information about the gandhi Sentence5: yes this is correct. Sentence6: I have museums, nightclubs, entertainment venues and cinema. is there a particular attraction you are looking for? Sentence7: Thank you for your help. Sentence8: I recommend the Byard Art Museum at 14 King's Parade in postcode cb21sj. Can I help you with anything else? Sentence9: Thank you for using the Cambridge TownInfo Center. Goodbye Sentence10: A table has been booked for four people on Saturday at 20:00. It will be reserved for 15 minutes. Reference number is TSS303TH . How else may I help you? Sentence11: Yes, could you please book a table for me thank you. Sentence12: What day and time would you like? Sentence13: I have booked your taxi. Be expecting a blue Lexus. Please call 07043827039 should you need to reach them. Sentence14: I'm looking for places to visit on the south side of town. Sentence15: It is an Indian restaurant located in the centre area of town. Were you interested in book a table? Sentence16: I'm open to anything really. Surprise me and recommend one and get me the address. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System