Lingling: Hello, Ms Liu. Good morning!
Ms Liu: Good morning, Lingling!
Lingling: Ms Liu, please sit down.
Ms Liu: Thank you, Lingling. This is my son, Jack.
Lingling: Hello, Jack!
Ms Liu: Jack, this is Lingling.
Jack: Hello, Lingling.
Lingling: Hello, Ms Liu. Good morning!
Ms Liu: Good morning, Lingling!
Lingling: Ms Liu, please sit down.
Ms Liu: Thank you, Lingling. This is my son, Jack.
Lingling: Hello, Jack!
Ms Liu: Jack, this is Lingling.
Jack: Hello, Lingling.