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: There are many available, is there a specific day and time you'd like to leave on? Sentence2: You're very welcome! Thank you for contacting the Cambridge TownInfo centre. Sentence3: I need a train ride to peterborough that departs from cambridge Sentence4: Yes, thank you, can I get the price for that please? Sentence5: I have 11 different museums. Might I suggest the Primavera. It just began displaying a new set of exhibits. Would you like more info on it? Sentence6: I would recommend train TR9859 that arrives at 05:56. Sentence7: Sure, what type of places are you interested in? Sentence8: I need the phone number, postcode, and address. Sentence9: The cost per ticket is 16.50 pounds. Can I book you a ticket? Sentence10: i would also like places to go in the centre of town Sentence11: Sorry going to peterborough to cambridge friday and would like to get there by 16:45 please. Sentence12: Anything that seems fun in the centre. Maybe a museum? Sentence13: No, that's all. Thank you for your help! Sentence14: Sure, it's located at 10 king s parade cb21sj and can be reached at 01223357708. May I help with anything else? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User