Chloe: Do you know what happened to Mark?
Chloe: He's not returning my calls.
Rory: I'm not surprised.
Chloe: What do you mean?
Rory: He's on his annual trek in the mountains.
Rory: I doubt he has reception and/or access to Internet at the moment.
Chloe: Ah, don't know why but I believed his trek starts next months.
Rory: Weather forecast for next months was really bad so he decided to go earlier.
Rory: I'm sure he'll call you back/write to you when he has the chance.
Chloe: That's okay, I was worried that something happened to him.
Chloe: He's usually pretty quick with calling back.
Rory: True but like I said nothing to worry about.
Chloe: Great, thanks for the info.
Rory: No problem!
Mark's not returning Chloe's phone calls. He's trekking in the mountains, as Rory said.