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: You're welcome. Is there anything else you need help with today? Sentence2: Yes that sounds perfect. Please secure passage for 8 people on the TR8893. Sentence3: Thank you for your help. Sentence4: You're welcome. Have a great day! Sentence5: That is all, thank you for your help Sentence6: Yes, I am looking for a train that departs from cambridge on wednesday. I would like to leave after 17:15 and my destination is stansted airport. Sentence7: I am unsure if there is an entrance fee but their phone number is 01223353248, I'm sure they will be able to tell you of any entrance fee. Sentence8: I have train TR8893 that leaves at 17:40 and arrives at the airport by 18:08. Would this work for you? Sentence9: I'd like to try the Kings Hedges Learner Pool. Is there an entrance fee? Can I get their phone number please. Sentence10: Okay, the booking was successful. The total fee is 80.8 GBP payable at the station. The reference number is W2NAQGIF . Can I help with anything else? Sentence11: Where can I find a swimming pool in the north of town? Sentence12: I have two swimming pools listed north of town. The Jesus Green Outdoor Pool and the Kings Hedges Learner Pool. Do you have a preference? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User