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: No, that's all I need from you today, Thanks a bunch! Sentence2: The earlest I have leaving is train TR7713 at 19:27,will this be okay for you? Sentence3: There are nine I recommend allenbell it's a 4 star guesthouse. Would you like the address and phone number or me to book it for you? Sentence4: Thank you. Feel free to call back if you need assistance. Sentence5: Can you give me the phone number and postcode please? Sentence6: A guesthouse in the east, please Sentence7: Yes, I am waiting for my system to load I will have that for you shortly. Sentence8: Oh, not Ely, sorry. I need to leave after 16:00 going to London Liverpool Street. Sentence9: That is good, I also need a place to stay with a cheap price and free parking. Sentence10: 01223210353 is the phone number. The postcode is cb13js. Can I help with anything else? Sentence11: Ok, and where are you heading to? Sentence12: Um, ok. Are you read to give me that information now? Sentence13: I am trying to find when the train is leaving Sunday Cambridge can you help me? Sentence14: What time do you want to arrive by? Sentence15: I am heading to Ely. Sentence16: I have several hotels in your price range with free parking, what area would you like? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User