Liz: Erica, thanks for inviting me to your birthday party l was really looking forward to next Saturday night Erica: I've been planning this party for ages! You're coming, aren't you? Liz: Well, Erica, im calling you up to explain Unfortunately l'm not going to be able to make it. Erica: No way! refuse to accept that linsist on your coming Liz: I'm sorry, I really am You see, it's my parents wedding anniversary, and they're having the whole family over for dinner They expect me to be there, and I can't let them down Erica: So sneak out as soon as the dinner's over Liz: can't just walk out like that Erica: Of course you can.