Alert! Alert! We are under attack. 
Please provide your name.
My name! This is Luke and we're locked out of the door! Help.
Please provide your rank.
Is this a joke? Bombs are dropping around us and you need my rank! I'm the Chief Engineer, now do something.
Please enter the code.
I don't have the code! 
Sorry, you are not authorized to unlock the door. Please obtain a clearance code from the Captain.
I'm the Acting Captain, it says so on this piece of paper. Oh, it also has a code on it...93103..sorry about that. 
Please specify the code type.
Clearance Code, you love wasting time with details.
The door is now unlocked.
About time. We could have died.
Is there anything else that I can do for you?