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: That's all I needed today. Thanks for your help. Goodbye! Sentence2: Okay, the three results are the same. I still recommend charlie chan. Do you need more help today? Sentence3: Yes, I'm also looking for a cheap Chinese food restaurant. Can you recommend one? Sentence4: I don't have a particular area in mind but I do also need free parking please. Sentence5: How about the hamilton lodge. It is in the north of town and meets your requirements including parking. Sentence6: I should have mentioned I am looking for a restaurant in the centre. Sorry about that. Sentence7: Sure, there are 4 options. I recommend charlie chan. would you like a booking? Sentence8: that sounds nice but will you book it for 7 people and 4 nights starting from wednesday Sentence9: Thanks for trying. Let's do Thursday, please. Sentence10: I would like a 3-star hotel with free WiFi, please. Sentence11: Booking is all set your ref number is 05MF6IQL Sentence12: I'm sorry, I am unable to book it for that time. Do you have another time that will work? Sentence13: Your booking was successful, the reference number is CUY4J5PR . Is there anything else I can help you with today? Sentence14: Yes, please book that restaurant for me. It'll be 7 people on wednesday at 14:45. I'll definitely need a reference number. Sentence15: Yes, there are 5 different options to choose from. What area will you be staying in? Sentence16: Thank you enjoy the rest of your day! Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User