Describe the situation.
Can / May I go to the bathroom? - I'm afraid not.
Describe the situation.
Could you please open the car door? - Of course!
Describe the situation.
May I use your laptop for a moment? - Yes, no problem. / No, you may not.
Describe the situation.
Would you like something to drink? - Yes, a glass of tea, please.
Describe the situation.
Could I ask you something? - Sure go ahead.
Describe the situation.
Can I have a cup of coffee? - Sure / certainly.
Describe the situation.
Can you take a picture of me? - absolutely.
Describe the situation.
Can I help you with the boxes? - Yes, please.