B: Hi too
A: I want to ask some questions about this school's subject.
B: sure go ahead
A: is the chemistry subject in this school is hard?
B: yes it's quite hard, you need to study hard if you want to understand it
A: oh okay, how about biology class?
B: biology class has a very friendly teacher. everything you ask he will answer.
A: okay thanks for your information
B: You're welcome