Mike: U there yet?
Anna: No. Stuck in traffic. U?
Mike: Good! I have to stay longer at work. 
Anna: What? Y?
Mike: Boss needs something and "asked" me to stay.
Anna: Rain check maybe?
Mike: No way! I'll be there, but I'll be a little late.
Anna: How late?
Mike: Well, at least an hour...
Anna: Oh...
Mike: Maybe you could wait for me in that cafe nearby? My treat!
Anna: Will think about it. 
Mike needs to stay longer at work today. He's going to be at least one hour late for a meeting with Anna.