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: I will be departing from Stevenage and going into Cambridge on Sunday. Sentence2: Great, thanks so much! What is their address and postcode? Sentence3: Okay, their phone number is 01223327978. Sentence4: No, thank you, but could you tell me the arrival time? Sentence5: I want to depart anytime after 15:30, so the soonest available train after that would be nice. Sentence6: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence7: I have TR1577 leaving at 15:54, would you like me to book a ticket? Sentence8: The address is 41 warkworth street and the postcode is cb11eg. Is there anything else I ca help you with? Sentence9: Thanks! I'm also looking to stay in a 0-star guesthouse in the center of town. Oh, and I need free parking. Sentence10: There are multiple trains on sunday. Do you have a time you want to depart or arrive by? Sentence11: Hi, I'm planning a trip and am finding the trains to be a bit confusing. Can you help me find one? Sentence12: I have the City Centre North B&B in the north and El Shaddai in the centre. Which would you prefer? Sentence13: Yes, the train arrives in Cambridge at 16:43. Sentence14: Yes I would be happy to help you. Where will you be departing from and what is your destination? Sentence15: El Shaddai, please. I need their phone number, address, and postcode. Sentence16: Great. That's all I need. Thank you. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User