percakapan bahasa inggris offering for help and refusing for help

Offering for help
A: Good Morning B, what are you doing?
B: Good morning A, uh, i'm a little bit hard to find connection in here.
A: Can i help you? i know about technology a little bit.
B: Thanks A! you really helpful

Refusing Help
C: Hi D! what's wrong?
D: I can't do my homework, it's so damn hard
C: Let me help you.
D: Thanks C, but i think i have to solve this by myself.. i need more concentration to solve this..