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 train leaving on tuesday going to cambridge? Sentence2: Yeah I am also looking for a hotel by the name of lovell lodge. Sentence3: What day will you be arriving? Sentence4: Sure, where are you leaving from and any certain departure or arrival times? Sentence5: Four people please. Sentence6: Great! Can you book for 4 people, please? I'll need the reference number. Sentence7: Lovell Lodge is a moderately-priced 2-star hotel in the north area of town. They're located at 365 Milton Road, cb41sr. Sentence8: I want This to be on Tuesday Sentence9: Thank you so much. That's all for now. Good bye. Sentence10: You are thorough, I would like to book my group a 4 night stay there, please. Sentence11: How many are in your group? Sentence12: Absolutely. Four tickets have been booked for this route and your reference number is 6YC0WN0E . Is there anything else I can help you with? Sentence13: I have the tr6741 leaving at 18:40 how many tickets would you like? Sentence14: Thank you for using our service! Sentence15: i'm leaving from birmingham new street after 18:30 Sentence16: Okay that booking was successful. Your reference number is JGZHQJD7 . Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User