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 have several options, would you like me to book that for you. How many passengers would you have? Sentence2: I do have one place. Gourmet Burger Kitchen is expensive and in the centre. Do you need a reservation? Sentence3: Good day, enjoy your time in Cambridge. Sentence4: Yes please. I need to book for 8 people. Sentence5: Thank you that will be all. Bye! Sentence6: Yes, please. Is there something available for 13:15 on Saturday for all 8 people in my group? Sentence7: Yes. I want to eat at an Indonesian restaurant in the center area of town. Sentence8: I'm leaving from birmingham new street on saturday. Sentence9: I'm not sure it that option will work for me. I need the train to go to Cambridge and arrive by 9:00. Sentence10: Yes, let's try North American food, please? Sentence11: Ok. I can help you with both of those. Where will you be leaving from? Sentence12: TR7802LEAVES 09.40. WHAT KIND OF FOOD DO YOU WANT Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : Z4WQXEDR . Is there anything else? Sentence14: Booking was successful, the total fee is 480.64 GBP payable at the station . Reference number is : LW32MFA7 . is there anything else i can help you with? Sentence15: I'm sorry there are no matches. Would you like me to check a different area or food type? Sentence16: Hi, I am looking for some train information for my trip. Also, I can't wait to try some of your local restaurants. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User