Let's push it back an hour.
Let's delay/postpone it for an hour.
Can we move it up an hour?
Can we meet an hour earlier?
Would it be okay if we moved it forward by an hour?
Let's plan this for another weekend, okay?
A: Hey, Bob. Can we meet a little later this afternoon that we planned?
B: Yeah, no problem, what time?
A: Let's push it back an hour to 5 PM, okay?
A: Hope you don't mind, but I can't make it for drinks after work.
B: Really? Why not?
A: My wife just called and wants me to come straight home after work.
A: I have to call off our trip this weekend. Something's come up.
B: Oh, that's too bad. We'll miss you.
A: You know that date you set me up with on Saturday?
B: Don't tell me you can't make it now...
A: Oh, I'm really sorry, but the boss dumped a lot of work on me today. It needs to be finished by next monday.
B: So you won't even have time for dinner on saturday night? Come on, you have to eat anyway, you know.
A: I know, but I was just going to order out from my office. Look, can 't he take a rain check? I'll be happy to meet him the following week.
B: This is the third time you've postponed dates that I have set up for you. I'm beginning to lose hope for you.