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: Old School is the multiple sports attraction? Great name. What's the address? Sentence2: Great, you've handled all my needs for today! Thanks a ton! Bye! Sentence3: Thanks, again. Finally, I need a taxi between the hotel and the Old School attraction, please. Sentence4: Absolutely, what is the date and time you would like the taxi for? Sentence5: Sure thing what kind of food do you want? Sentence6: The address is Trinity Lane. Is there anything else I can help you with? Sentence7: Booked your taxi, a black ford. Contact number will be 07004802042. Sentence8: Sure thing! It is cb21tt Sentence9: i recommend old school 01223332320 Sentence10: I've made those reservations and your reference number is 19IY1XE1 . Sentence11: It was my pleasure! Bye until next time! Sentence12: Yes, can you help me find a cheap place to eat? Sentence13: The same day, I want it to take me between the two places. I'll need to leave the hotel by 10:30. Sentence14: book for 2 people and 5 nights from monday Sentence15: Before we move on, may I get the postcode of Old School? Also, I'd like to find some information on hotel Express By Holiday Inn Cambridge rather than food. Sentence16: I am looking for an attraction in the centre that has multiple sports. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User