person A: Nothing in life is certain_comma_ the only control you have is to decide what to do with the time that has been given to you.
person B: I tend to believe that those who have Biblical faith do have a certainty_comma_ that God will bless them despite circumstances. 
person A: I have just bought a ticket to a britney spears live show in vegas.
person B: Oh really_comma_ when are you going to go see her?
person A: The show is in three months_comma_ I hope she sings he late 90s hits.
person B: I hope you have a good time at the concert_comma_ and she sings all the songs you're looking forward to.