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'm departing from london kings cross. Sentence2: How does tandoori palace sound? It's Indian on the west side and expensive. Sentence3: I have 117 results for trains going to cambridge on Tuesday, where will you be departing from? Sentence4: The train ID is TR3456. Sentence5: The price of the ticket is 23.60 pounds. Sentence6: I apologize, the train that arrives by 16:08 is actually the TR0269, and it leaves at 15:17. Is there anything else I can help with today? Sentence7: Thank you for your help. Sentence8: Could you give me the price of the ticket? Sentence9: no thanks. I'll take it from here. Sentence10: Thanks, and what time does that train depart? Sentence11: Could I get the train ID and time I would leave in case I want to book later. Sentence12: You're welcome. Let us know if you need further assistance. Goodbye. Sentence13: There is a train that arrives by 16:08 would you like me to book it? Sentence14: You're welcome. Have a great day. Sentence15: That sounds great! Can I get the postcode? Sentence16: The postcode for Tandoori Palace is cb43le. Would you like to make a reservation there? Sentence17: I need a place to dine on the west side. Could you give recommend an Indian restaurant, please? Sentence18: Hello, I'm coming to Cambridge soon to try some local restaurants, and I need a train. I need to leave on Tuesday and arrive by 16:45. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User