B: Hello! This is Sam.
A: Hi, Sam. This is Jane.
B: Tomorrow is Sunday. Would you like to go to the zoo to see animal shows with me?
A: I'd love to.
B: OK. Please be here on time (按时).
A: Sure. May I ask my friend Jenny to go with us?
B: That would be fine.
A: OK. I'll call her. Bye!
A. What's up?