Answer and Explanation:
Even though there are no instructions, we can easily assume we are supposed to choose the best way to complete the dialogues. In order to do that, we need to pay attention to the context, choosing what makes more sense according to what has been originally said.
1. Hi. I'm Maya.
Nice to meet you, Maya. My name is Lisa. --> Context: introducing oneself.
2. Hi! How's it going?
Great! And you? --> Context: asking how someone is doing (informal).
3. Good morning. How are you?
Fine, thank you. --> Context: asking how someone is doing (formal).
4. Nice to meet you.
Nice to meet you, Maya. --> Context: introducing oneself (responding to "nice to meet you")
5. This is my friend Piotr.
Hi, Piotr. My name is Simon. --> Context: introducing others.
6. What's your friend's name?
Her name's Hanna. --> Context: asking for information (friend's name)
