You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: I have the TR4849 train leaving Ely at 13:35 on Monday. Sentence2: How about cityroomz? It is located in the centre of the city, is moderately priced, has 0 stars, and has free wifi. I think it would be perfect ofor you! Sentence3: Perfect, could you also assist me in finding a place to stay? Sentence4: What will be my arrival time in Cambridge and what is the ticket price, please? Sentence5: You're welcome. Have a great day. Good bye. Sentence6: You are booked and your reference number is QUJQMRK7 . Can I help you with anything else? Sentence7: That is everything, thank you for your help. Sentence8: From where will you be departing? Sentence9: I'm looking for a train that goes to cambridge, leaving after 12:30 on monday Sentence10: I am leaving from Ely. Sentence11: Oh I'm not picky on the area. I definitely need free wifi, moderate price, and 0 stars though. Sentence12: That's perfect I need it booked for 8 people for 5 nights starting on Monday. Sentence13: I sure can. What area would you like to stay? Sentence14: The price is 4.40 pounds. You will arrive at 13:52. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Booking was successful. Your reference number is : 1F0GOZ1D . Sentence2: Can you try 4 nights instead? Sentence3: I recommen a and b guest house. Should I book that? Sentence4: We have 6 total guesthouses in the east, any more preferences? Sentence5: Not particularly. Do you have one you would recommend? Sentence6: Yes, I would like free wifi and a 4 star rating. Sentence7: I'm looking for a guesthouse in the east please. Sentence8: funky fun house would be nice for you Sentence9: Great, could I also find someplace near the hotel to go for fun? Sentence10: Unfortunately there are no rooms available for Wednesday in the East. Could I look at a different location or day? Sentence11: please, For 2 people for 5 nights starting on Wednesday Sentence12: I have six places, is there a price range you have in mind? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I also need a train on Tuesday departing from Broxbourne. Sentence2: No, there is not anything earlier than 18:32. How many tickets do you want to purchase? Sentence3: The arrival time for TR8653 is 19:32 and the travel time is 60 minutes. Sentence4: We have 5 colleges to visit on the west side. Churchill College is a nice one, and it's free to enter. Sentence5: What time did you want to travel? Sentence6: Hey, I was wondering if there are any multiple sports venues on the west side? Sentence7: What time would you like to arrive by? Sentence8: Not on the west side, no. There is on multiple sports venue in Cambridge, and it's in the east. Sentence9: what is its arrival time and how long will it take? Sentence10: Sure thing, the address of Churchill College is Storey's Way, postcode cb30ds. Is there anything else I can help you with today? Sentence11: Leaving anytime after 17:45 please. Sentence12: If there isn't anything earlier that is close to 17:45 I will take the train at 18:32. Sentence13: How about a college to visit instead? Sentence14: The closest train is TR8653, it leaves at 18:32, shall I book you? Sentence15: Can I have the address and postcode of Churchill College and entrance fee? Sentence16: The earlier the better, so whichever train leaves closest to 17:45 Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:

Answer: (A) User