Temporary fix for a large chip to the composite resin on my front tooth?

I have composite resin bonding on #8 and #9. I just bit into something today and the bonding broke on #9 - just part of it came off, but it looks quite terrible. I have to travel cross-country to give a presentation to clients in 2 days and, of course, it's Labor Day weekend so its very doubtful I can get it fixed before then. Is there a temporary fix I can do to "glue" the broken piece back on just to get me through a day or two when I can return home and my dentist can fix it properly?