When did Carolyn call Bob?

W:Bob, you weren’t at home last Saturday, were you? I tried to call you.
M:Oh, that’s right, Carolya I suppose you phoned me in the morning, didn’t you?
W:Yes, it was late in the morning when I phoned.
M:Oh, I was out shopping. Why did you phone me?
W:I wanted to ask if you’d like to come to dinner on Sunday.
M:Oh, what a pity!I wish I had come but—actually, I went on a river trip practically the whole daySunday.
W:How was the trip?
M:Very worthwhile. By the way, how did the dinner party go?
W:Well, we had a wonderful time... er...I thought you might have enjoyed it too if you had come. Tom Welsh and his wife were with us. You’ve met them before, haven’t you?
M:Tom Welsh, yes, I rather liked him.
W:And we had a lovely dinner with green cabbage, cucumber soup and fresh salad.
M:Very nice.
W:And they asked about you.
M:And how’re they getting on?
W:Oh, very well. They enjoyed the party very much.
M:Ah, good.