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: The south. I'd like a 3 star place if you can find one. Sentence2: No. that will be all. Thank you. Sentence3: Can you find me a taxi to commute between the hotel and Jesus College? Sentence4: I have lots of options. Can you tell me more about your preferences? Sentence5: If it offers free Wifi, sure. I need a single for 3 nights starting Thursday. Sentence6: Ok great, your room has been successfully booked. Your reference number is X33X44F6 . Is there anything else I can help you with? Sentence7: Certainly. Jesus College is in the Centre of town, on Jesus Lane, CB48BL. There is no entrance fee. Their number is 01223339485 if you'd like additional information. Anything else today? Sentence8: Can you tell me about Jesus college? Sentence9: Can you tell me at what time you will be needing taxi service, please? Sentence10: I'm also looking for a place to stay. Sentence11: Your taxi was booked! The car type is yellow ford and the contact number is 07799391309. Sentence12: Thanks so much. That was it for me for today. Have a good night. Bye. Sentence13: Thank you for using Help Desk. Have a great day. Sentence14: I'm looking for somewhere moderately priced with wifi. Sentence15: Yes, I want to be picked up at the hotel no later than 11:00. Sentence16: Bridge Guest house is moderately priced and rated 3 stars. It is in the South. Would you like to book a room? Sentence17: Which area of the city would you like to stay in? Sentence18: Thank you for using our system. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System