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 can help you with that. What price range are you looking for? Sentence2: Wonderful, I can help you. Could you help me by telling me where you're departing from, and where you'd like to arrive? Sentence3: Yes I would also like to find a place to dine that serves italian food and should be in the centre of town. Sentence4: I am leaving birmingham new street going to cambridge. I need a ticket that leaves on saturday and will get me there by 12:15, can you help? Sentence5: You are very welcome! Thank you for reaching out to the Cambridge TownInfo centre. I hope you enjoy your stay! Sentence6: I need a train to arrive by 12:15 on saturday. Can you help me? Sentence7: yes, that's fine. Can I have the address please? Sentence8: I'm not ready to book, but appreciate the information. Sentence9: The train closest to your requested arrival time is the TR4382. It departs Birmingham New Street at 08:40 and arrives in Cambridge at 11:23. Shall I book you a ticket? Sentence10: Yes, the address is Market Hill City Centre. Sentence11: It should be in the expensive price range. Sentence12: Perfect, that is all I need for right now. Thank you for all of your help! Goodbye. Sentence13: No problem at all! Is there anything more I can help you with today? Sentence14: There are 4 in the area I recommend Stazione Restaurant and coffee bar. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System