The formal expressions and phrases you get from school can be entirely different from the real-world English used by native speakers. Hello, yes, no, because, thank you, I think, Well done are words/phrases that are often used in a dialogue/conversation If you want your dialogue to sound like a native speaker, you may try to use other expressions instead of repeating the same responses many times.
INSTEAD OF SAYING “YES” YOU CAN SAY:
- -Sure, I will. /Sure, I can. /Sure, I do.
- -Of course, /Certainly.
- -No problem.
- -Definitely.
- -Absolutely.
- -By all means.
- -I’d love that.
- -OK.
- -You bet.
- -Alright.
- -That would be great.
- -Why not?