Ash: Sure. Actually the power's just gone out so I guess I can't book tickets at the moment - if you like I can take your name and number and call you back once the power is back on?
Guest: Ok. Online it looks like J 17 is available?
Ash: Well the power's out here so I can't tell what's available but if it's not black online the it should be available.
Guest: Can I book that seat then?
Ash: Well the power's out so I can't book it for now, I can call you when it's back on or you could book it online now.
Guest: Well are there any other seats available near there?
Ash: ... I'm not sure, the power is out here so I can't tell what's available...