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: Okay great, your reference number is W1YEMRMR . Is there anything else you need? Sentence2: I will leaving leicester the same day and I need to leave after 13:30. Sentence3: I'm looking for a place on the westside. Sentence4: Thanks to you for help me with all these bookings. Sentence5: I'd be happy to help you narrow down the train schedules. Where will you be traveling from, and on what day and time? Sentence6: No, that will be all. Thank you. Sentence7: Yes please. Also could you provide me the reference number for that? Sentence8: Are there any moderately priced hotels that have free parking, or do they all charge extra for that? Sentence9: You and your passengers are booked on the train. Your reference number is QEAJK6UR . Is there anything else I can help you with? Sentence10: Thank you! I also need a train going to cambridge. Sentence11: The Hobsons House is located in the west in the moderate price range. Would you like me to book this for you? Sentence12: I have one from leicester to cambridge called TR1492 leaving at 14:09 on Sunday. It's 30.24 pounds. Would you like me to book it for you? Sentence13: Thank you for using our service, have a great day. Sentence14: You're welcome, come back anytime. Your total fee is 241.92 GBP. Sentence15: Book it for 7 people and 5 nights starting from sunday. Sentence16: We will all be traveling together, therefore yes it will be for all of us. Sentence17: Will you be travelling with the same 7 people? Sentence18: Yes, there are actually 14 moderately priced hotels with free parking. Is there a specific part of town you would like to stay in? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System