A: I think my car needs an oil change.
B: Why don't you go buy the oil and do it yourself?
A: I am not familiar with the process.
B: I can teach you to do it, if you'd like.
A: I'd be grateful if you did.
B: How about next week?
A: That is too long from now.
B: Can you do it sometime this week?
A: I have too much work to do this week.
B: Then maybe you should take it to the mechanic.
A: Where can I find one nearby?
B: Look it up in the yellow pages, or even online.