Captain Jack Harkness: [Rose falls from the barrage balloon rope but is caught by a beam of light. Captain Jack speaks to her via loudspeaker] I'm just programming your descent pattern. Stay still as you can and keep your hands and feet inside the light field.
Rose Tyler: Descent pattern?
Captain Jack Harkness: [via loudspeaker] Oh, and could you switch off your cell-phone?
[Rose starts to complain]
Captain Jack Harkness: No, seriously, it interferes with my instruments.
Rose Tyler: You know, no one ever believes that.
[switches phone off]
Captain Jack Harkness: [via loudspeaker] Thank you, that's much better.
Rose Tyler: Oh yeah, that's a real load off, that is! I'm hanging in the sky in the middle of a German air raid with a Union Jack across my chest but, hey, my mobile phone's off!

Captain Jack Harkness: So... when you say 'your companion', how disappointed should I be?
Rose Tyler: OK. We're standing in mid-air on a space-ship during a German air-raid. Do you really think now's a good time to be coming on to me?
Captain Jack Harkness: Perhaps not.
Rose Tyler: It was just a suggestion.

Captain Jack Harkness: So, this companion of yours. Does he handle the business?
Rose Tyler: Well... I delegate a lot of that, yeah.
Captain Jack Harkness: Well, maybe we should go find him.
Rose Tyler: And how you gonna do that?
Captain Jack Harkness: Easy. I'll just scan for alien tech.
Rose Tyler: Finally, a professional!

Captain Jack: On my signal, head for the door. NOW!
[points a banana at the child like a gun]
Child: Mummy!
The Doctor: [points actual gun at wall and creates door] Go now! And don't drop the banana!
Captain Jack: Why not?
The Doctor: It's a good source of potassium!
Captain Jack: [grabs the gun back] Gimme that!

Credit to ninthdoctor.time-and-space.co.uk screencaps - The Empty Child - Series 2
Credit for quotes to Addicted to Doctor Who Facebook Group