Answer the phone

FTH: Hello?
B: It actually works!
I can talk to you from here.
FTH: What, it's you?
B: Yes, indeed.
FTH: What is going on?
You don't come back for some time and now you are calling me through this strange telephone, which I'm sure wasn't here last time, just as if you expected me to be here right now.
B: I have some things to tell.
But they will seem very unbelievable.
FTH: You're not alone then.
I also have something to tell about what happened in the last minutes.
And it is something very unbelievable as well.
So now I could be much more likely to believe whatever story you tell me.
But first, where are you?
B: We are on the moon, currently.