On one's own
Example #1 Natasha: Hey, Jackie! Thank you so much for sending me the e-mail regarding the next Summer trip! I wish I could join you guys, but I am actually going on a trip. Jackie: Oh, no! That’s a bummer! Sorry you will not join
Example #1 Natasha: Hey, Jackie! Thank you so much for sending me the e-mail regarding the next Summer trip! I wish I could join you guys, but I am actually going on a trip. Jackie: Oh, no! That’s a bummer! Sorry you will not join