S1:Excuse me, we want to board Motor Vessel Blue Whale. When does the service boat leave?S2:Marine No.1 leaves at 1 pm. She is over there.S1:Thank you. By the way, I'd like to buy some sack. Is there a shop around here?S2:There is a convenience store further down the street.S1:How can I get there?S2:Well, go out there, turn left at the corner, and then go straight for about 200 meters. You'll find it on your right.S1:Thank you very much.S2:That's all right. Be suer not to miss the service boat. Q3:What does the first speaker want to buy?