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 would like Italian please. Sentence2: I don't need to book just yet. But could you help me located a New Zealand restaurant? Sentence3: Okay please book a table for five people on tuesday at 18:00 and give me the reference number Sentence4: The TR3456 from London Kings Cross on Tuesday departs at 13:17 and arrives at 14:08. Shall I book that for you? Sentence5: What area of town do you prefer? Sentence6: Actually, let's look for the train first, please. I'll be traveling from London Kings Cross to Cambridge on Tuesday and I'd like to arrive by 15:45. Sentence7: I's sorry, but could you give me the actual train travel time between the two cities? I'm not good at math. Sentence8: Could you try to book that again for 5 people at 18:00 on Tuesday? Sentence9: Wagamama is an expensive Japanese restaurant in the centre of town. Sentence10: Thank you and enjoy your stay in Cambridge! Sentence11: Great news, the booking system is back up and I made your reservation! The Ref. # is ETUL1R4O . Anything else I can do? Sentence12: It doesn't matter the part of town. Sentence13: There are no other Japenese Restaurants in that area. Sentence14: help me narrow down the choices by giving me the price range Sentence15: Thank you very much. That is all for today. Sentence16: Hello! I am about to go to Cambridge and I would like some information about local restaurants. I also need to see if I can book a train to Cambridge that gets there before 15:45. Sentence17: Unfortunately, we no longer have any new zealand restaurants in the city. Can I search for something else for you? Sentence18: We have many options for restaurants. What food type are you interested in eating today? Sentence19: Is there another Japanese restaurant in the center of town? Sentence20: It takes 51minutes. Sentence21: Thanks, could you also recommend could you help you help me find a place with japanese food? Sentence22: I am unable to book it at this time. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System