Maybe some other time

Maybe some other time.

 and We'll try again some other time.
a polite phrase said by a person whose invitation has just been turned down by another person. Bill: Do you think you can come to the party? Bob: I'll have to beg off. I have another engagement. Bill: Maybe some other time. John: Can you and Alice come over this Friday? Bill: Gee, sorry. We have something else on. John: We'll try again some other time.
See also: maybe, other, time