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: TR0552 departs 15:21 and arrives in Leicester on Friday at 17:06. Would this suit you? Sentence2: I would like to go on Monday in the morning. Sentence3: No, I don't have a preference on location. Sentence4: I have 2 3 star hotels available, one in the centre and one in the south. Do you have a preference? Sentence5: No, I also need to find a place to stay. I'm looking for a 3 star hotel. Sentence6: Done! Your reference number is GRWG727T . Can I help you with anything else? Sentence7: That would be great, thanks. We'll have 7 people staying 5 nights starting from Sunday. Sentence8: I need help finding a train departing from Cambridge and going to Leicester. Can you help? Sentence9: No thank you that is all I needed. Sentence10: I've booked you 7 seats on the TR0552. Your reference is CQ3FE1GX and the fee of 264.59 GBP is payable at the station. Will that be all? Sentence11: Want me to book gonville hotel? Sentence12: You are welcome. The Cambridge TownInfo centre is always here for you. Goodbye. Sentence13: When would you like to travel? Sentence14: Train TR6105 leaves Cambridge to Leicester Monday morning at 6:21, would you like me to book this for you? Sentence15: Oh, I need to change the day to Friday for the train to Leicester and it needs to arrive by 17:45. Do you have something on that day? Sentence16: Yes please book it for 7 people and give me a reference number. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User