Follow-up questions using Perplexity API

[payal-github]

How can I ask follow-up questions using the Rest API callout? For example:
messages = [
{
content: "Do you know Abc person? Answer as yes/no/unknown in JSON format only."
role: "user"
},
{
content: "Answer as yes/no/unknown in JSON format only."
role: "assistant"
},
{
content: "If yes, provide more details about that person."
role: "user"
}
]

Please suggest a better way to do this.