Buatlah 2 contoh percakapan singkat tentang uncertainty dan certainty

Certainly:

1. A: are you sure that?
B: of course

2. A: Are you certain?
B: sure, i am certain

Uncertainly:

1. A: I am not sure...
B: yes, but well, it's possible

2. A: I doubt it..
B: Yes I am to..