You shouldn't refuse your coworker's requests.
Oliver asks his coworker Sam to help him print some copies of the report because Oliver has too much on his hands.
Sam wants to respond to Oliver.
Sam asks Oliver how many copies he needs printed and if he could help with anything else.
Sam tells Oliver that he can do it himself because Sam was about to go on break in 30 minutes.
Oliver is grateful for Sam's help and treats him to lunch.
Oliver looks irritated with Sam and two have a strained working relationship.