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: That attraction works, can I have more information? Sentence2: Sure! It is located on Jesus Lane, CB58BS. The entrance fee is free and their phone number is 01223452587. Sentence3: You're welcome! Bye! Sentence4: Thank you. I would really like african food if possible. Sentence5: There are many to chose from in that area, might I recommend all saints church? Or are you looking for something specific? Sentence6: Thank you for all your help. Sentence7: Thank you. Yes, I am also looking for an attraction in the same area of town. Sentence8: Ok, your table has been booked and will be reserved for 15 minutes. Your reference number is 12UC21E9 . Can I assist you further today? Sentence9: Bedouin is the only African restaurant in town, but they're not cheap. Would you like to try a different type of cuisine? Sentence10: You have a lot of great choices. Can we narrow your search with a type of cuisine you'd like or would like to avoid? Sentence11: i am looking for a cheap restaurant in the centre part of town. Sentence12: Okay, great. I'll also need a taxi to commute between the two places. I'll need to arrive at the restaurant by the booked time. Sentence13: would you like me to book it for you ? Sentence14: would you like me to book it for you ? Sentence15: yes, please. 7 people at 17:00 for saturday Sentence16: Your taxi is booked. Be expecting a blue Volkswagen. If you need to contact the company, please call 07745957950. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User