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 you help me find a place to dine? Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 4O6WBUD1 . anything else today? Sentence3: Is there anything else you need today? Sentence4: Is there a specific area of town you would like? Sentence5: Churchhill College is in west and its a college the post code is cb30ds Sentence6: What sort of attraction would you like? Sentence7: Ok, there are six. They are all expensive except for one. Sentence8: I would recommend the Meghna for you. Should I make a booking for you? Sentence9: I am also looking for somewhere to go in the same area as the restaurant Sentence10: Okay great, thank you. Sentence11: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence12: Whatever is popular, I just need the attraction type on postcode of whatever you pick Sentence13: I am looking for something in the moderate price range, please. Sentence14: Yes, please. Can you book me a table for 5 people at 12:45 on Wednesday? Thanks Sentence15: No, that will be all. Thank you! Sentence16: I'd like an indian restaurant in the west. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User