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: I will be leaving from Birmingham new street on Sunday. Sentence2: Is there anything else I can help you with, today? Sentence3: Thank you. I'm also looking for places to go in town. What do you have in the way of cinemas, in the center? Sentence4: That is all, goodbye. Sentence5: Hi there. I am looking to find a train to get me to Cambridge. Can you help with that? Sentence6: TR2026 arrives by 22:23 Sentence7: Starting at 19:40 there are trains every hour through 23:40. Would you like to book a seat on one? Sentence8: They are located at the Grafton Centre, East Road. Their postcode is cb11ps. Unfortunately, I do not have the entrance fee. But, you can contact them at 08712240240 for that info. Sentence9: Thank you for the information. Sentence10: No, if you can give me the entrance fee, phone number, and postcode, I'll do it myself. Sentence11: What time does it arrive and whats its ID? Sentence12: Have a great day! Sentence13: I have several options on Sunday starting at 05:40 and leaving every hour. Do you have a particular departure or arrival time in mind? Sentence14: There is the Vue Cinema in Centre off of East Road. Would you like me to check what is playing and book tickets? Sentence15: yes i can where will you be departing from? Sentence16: Do you have a train leaving Sunday at 19:00? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User