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: What time will that be? Sentence2: Going back to the train info, how long is the ride from birmingham new street to Cambridge? Then, I want to book the Anatolia restaurant for Friday, also. Thank you. Sentence3: Alright, your train ticket has been purchased and the reference number is 41YRXR8G . There are also 2 moderately priced Turkish restaurants in the centre of town, the Anatolia and Efes Restaurant. Sentence4: I have many trains that can get you to your destination. What day would you be traveling? Sentence5: I need a train that leaves after 15:00 on Friday. Sentence6: What train can I take to get to Cambridge from Birmingham New Street? Sentence7: I need to leave on Friday. Sentence8: Can you give me the reference number? Sentence9: I have not found any train that matches your info. Can I help you with anything else? Sentence10: I will be going to cambridge. Sentence11: 1 ticket please. I am also looking for a moderately priced turkish restaurant located in the centre. Sentence12: Certainly, the number is KRE2S785 . Can I be of further assistance? Sentence13: You're welcome. Goodbye! Sentence14: Where will you be going? Sentence15: The train trip is 163 minutes. How many people will be in your party for the restaurant? Sentence16: It would be 2 people. Sentence17: No, that is all I need for now. Thanks so much. Bye. Sentence18: ok I have reserved a table for 2 at the Anatolia Restaurant for 19:00. Is there anything else I can do for you? Sentence19: I'd like the table reserved for 19:00. Sentence20: How about TR9756, it leaves at 15:40. How many tickets would you like Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System