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: Can I book a table for 6 people at 15:45 on Tuesday? Sentence2: Can you try another restaurant? Sentence3: Let's try the other restaurant. Sentence4: Okay, we have the cambridge university botanic gardens in the centre of town. Will that work for you? Sentence5: I want to make sure I can get from the park to the restaurant in time. Sentence6: I'm sorry neither restaurant has an available table would you like to try another day or time? Sentence7: I am looking for a restaurant in the expensive price range that serves thai food. Sentence8: I also need a taxi to go from Sala Thong to the Gardens. Sentence9: Sure, they're in postcode cb21jf. Is there anything else I can help you with today? Sentence10: There is sala thong and bangkok city. Sentence11: Have a great day! Sentence12: I was able to book you a table at Sala Thong on Tuesday at 15:45 for 6 people. Your reference number is EPNSY28V . Anything else I can help with? Sentence13: Thank you! That will be all. Sentence14: Yes, that will work great. Can I get their postcode please? Sentence15: Okay i have you booked for a yellow volvo. The contact number is 07033533386 . Sentence16: I would like to go to a park in the centre of town. What would you recommend? Sentence17: There are no reservations at that time. Would you like to try another time slot or another restaurant? Sentence18: What time do you want the Taxi to meet you? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System