Provide the theme summaries for the following conversation: 

Jennifer: Dear Celia! How are you doing?
Jennifer: The afternoon with the Collins was very pleasant, nice folks, but we missed you.
Jennifer: But I appreciate your consideration for Peter.
Celia: My dear Jenny! It turns out that my decision not to come, though I wanted so much to see you again and Peter and the Collins, was right. Yesterday it all developed into a full bore cold. Sh.....
Celia: All symptoms like in a text book.
Celia: Luckily it's contagious only on the first 2, 3 days, so when we meet next week it should be alright.
Celia: Thanks for asking! Somehow for all of us Peter comes first now.
Jennifer: That's too bad. Poor you...
Jennifer: I'll be driving to FR, do you want me to bring you sth? It's on my way.
Celia: Thank you dear! I was at the pharmacy yesterday and had done my shopping the day before.
Celia: You'd better still stay away from me in case I'm still contagious
Jennifer: Right. So I'll only leave a basket on your terrace. Are you in bed?
Celia: Goodness me - not! Actually working at the desk. A long overdue commission.
Jennifer: OK I won't disturb you.
Celia: What basket??
Jennifer: If you can work it can't be that bad.
Jennifer: Maria brought plenty of cookies and I still had my linzertorte, so we're glutted with cakes and you surely have none.
Celia: But you gave me two bags of almond snaps! 
Celia: I'm so happy I've lost some weight in Mexico.
Jennifer: They keep forever! Why don't you share them with William? All men love linzertorte.
Celia: True enough. Gustav did!

Summary: 
Celia couldn't make it to the afternoon with the Collins and Jennifer as she is ill. She's working, but doesn't want to meet with Jennifer as it might be contagious. Jennifer will leave a basket with cookies on Celia's terrace. 