person A: All my friends got to go on vacation_comma_ but I'm stuck here doing work because I have a tight job deadline
person B: Thats a bummer! I hope you guys can plan something together once the deadline is over! 
person A: Maybe_comma_ but I'm not sure when another opportunity like this will come. It really gets me down
person B: I know :/ ...just make sure you do something fun when you have a chance! 