Mike:Sarah, let's go to the park ,this afternoon. 
Sarah: Great ,but how do we go to the park ? 
M: It's easy .Come to my home by bike, we can go to the bus stop on foot ,then we go to the park by bus. 
S: Ok ,but where is your home? 
M: My home is near the post office . 
S: which floor? 
M: The fifth floor Room 5a. 
S: Ok, this afternoon ,see you at 2 o'clock. 
M: See you then.