Answer:
1. Bonjour, Céline! Ça va?
2. Pas très bien, et toi?
3. Salut, Yasmine! Ça va bien?
4. Comme ci, comme ça. Au revoir!
Step-by-step explanation:
1. Hello Celine! How are you?
2. Not very good, and you?
3. Hi Yasmine! How are you?
4. I'm doing okay. Bye!
The sentences also seem to be in the wrong order (note english translation) but you didn't specify to reorder the sentences so I didn't