Martin: hi
Tony: hello
Martin: i was wondering if you'd like to go with us to Oslo..
Tony: with us?
Martin: with me and my wife
Martin: of course you and your wife
Tony: hmm
Tony: when do you go there?
Martin: for Christmas
Tony: oh, im sorry, we have to visit our parents
Tony: but thanks for offer
Martin: no problem
Martin: if you change your mind just let me know
Martin and his wife are going to Oslo for Christmas. Tony is visiting parents, and can't go.