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: Not at this time. Thank you. Sentence2: What time would you like to arrive by? Sentence3: I'm also looking for a particular hotel. Its name is called cityroomz. Sentence4: It does not matter. Sentence5: I would be happy to help with your request, what day will you be leaving? Sentence6: I really need to get out of Cambridge! Can you find me a train to Leicester? Sometime after 08:45 because I like to sleep in. Sentence7: Have a fantastic day, goodbye. Sentence8: I also need the travel time and arrival time please. Sentence9: The ticket price is 30.24 pounds. Can I be of further assistance? Sentence10: I have booked a room for 8 for 4 nights beginning on Tuesday. Your reference number is SY5AJ8CL . Is there anything else I can help you with today? Sentence11: No thank you. What's the cost of the ticket? Sentence12: Sure, what kind of information do you need? Sentence13: I'll be leaving this place on Saturday. Sentence14: arrival time is 11:06 and travel time is 105 minutes Sentence15: There is a train that leaves at 9:21 and arrive in Leiester at 11:06. Would you like me to book it for you? Sentence16: I'd like to to book it for 8 people and 4 nights starting from tuesday Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User