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 is a train on Monday at 19:54. Sentence2: Thank you for your help. That is all for today. Have a great day! Sentence3: There are 10 cheap places to stay with free parking. Do you want particular area of town? Sentence4: Yes, i also need a train that departs from stevenage and goes to cambridge. Sentence5: I'm looking for a cheap place to stay that has free parking. Sentence6: I want it for monday and to leave after 19:15 Sentence7: 3 people staying at alexander bed and breakfast for 5 nights, starting monday. Your confirmation number is 53R0PQMZ . Is there anything else I can help you with? Sentence8: Your train booking at 19:54 was successful, the total fee is 38.4 GBP payable at the station. Your Reference number is : W0FCJ48S . Is there anything else i can help you with? Sentence9: The area does not matter, but it should have a 4 star rating. Sentence10: Great. Let me know if you need any additional help. Sentence11: Yes, please book it for 3 people Sentence12: Please book for 3 people for 5 nights, starting from Monday. Sentence13: The alexander bed and breakfast fits your needs. Would you like me to book a room for how many days and guests/ Sentence14: Which day and time would you like this for? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User