Here is the answer:
A. 2 persons in the dialogue: Indah and Sony
The expression of asking for help from the dialogue is: "Can you accompany me to go there?"
The problem Indah is facing is toothache.
Another expression of asking for help could be: "Can you please help me with this?"
B. Sample dialogue:
Old woman: Excuse me, can you help me lift this suitcase into my car? I'm struggling to carry it.
You: Sure, I'd be happy to help. *Lifts the suitcase and puts it in the car*
Old woman: Thank you so much, dear. I really appreciate your help.
You: You're welcome. Have a good day!
Old woman: You too!
C. Sample dialogue:
You: Hey John, I'm really struggling with all this homework. Do you think you could help me figure some of it out?
John: Sure, what subjects do you need help with?
You: Mostly math and physics. I just don't understand how to solve these problems.
John: Alright, let's take a look and I'll explain how to work through them step by step.
You: Thank you so much! I really appreciate your help.
John : No problem, that's what friends are for.