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: What is the phone number? Sentence2: I was able to book a taxi for you, a yellow lexus. The contact number is 07618334504. May I help you with anything else? Sentence3: I need to know depart place and destination, as well as what time? Sentence4: I have 19 places that match that criteria. Is there any area of town you'd like to stay in? Sentence5: Thank you. That is all I need. Sentence6: The phone number is 01223324222. Sentence7: Okay thank you. Can I have the postcode and phone number? Sentence8: I would like for it to include free parking. The area doesn't matter. What do you recommend? Sentence9: what is their entry fee? Sentence10: I would like a taxi to commute between the two places. Sentence11: You're welcome, let me know if I can assist with anything else. Sentence12: i also want a place to stay which has a parking and has a star 4 Sentence13: Yes, it is located at 6 Trinity Steet, postcode cb21su. Do you need any more information? Sentence14: Cambridge Contemporary Art Gallery to acorn leaving at 21.15 Sentence15: Can you tell me where the Cambridge Contemporary Art Gallery is located? Sentence16: Acorn guest house offers free parking. It's in north part of town and is moderately priced. Sentence17: The entrance fee is free. Sentence18: Yes. The postcode is cb41da and the phone number is 01223353888. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User