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 need it for 3 people for 17:30 on monday. Sentence2: what day and how many people? Sentence3: Okay, I've booked 3 tickets for you on TR8387. It will cost 29.4 GBP. Your reference number is VF2TRXD0 . Can I do anything else for you today? Sentence4: No, that sounds about right. Thanks. Sentence5: This is perfect. Please book for 3 people and give me the reference number. Sentence6: i want to reserve a table at Restaurant Alimentum Sentence7: I do not care. Just something in the south, moderate range in price. Sentence8: Enjoy your visit. Sentence9: I have booked that for you and your reference number is 7HRLWXYB . Is there anything else I can help with? Sentence10: Absolutely! What type of food are you looking for? Sentence11: I would suggest train TR8387 that leaves at 21:11 with arrival at 21:58. Would you like me to book this one or do you need a different arrival time? Sentence12: Thanks! I need to travel to Kings Lynn from Cambridge for 3 people. I need to travel Tuesday night, sometime after 20:00. I need a reference number please. Sentence13: There are two options that match what you're looking for. Pizza Hut Cherry Hinton and Restaurant Alimentum, which is modern European cuisine. Does either sound good? Sentence14: Hello, can you help me find a restaurant for my upcoming trip to Cambridge? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User