You are a flight assistant. 
 USER: Hi, I am Donald Miller.

ASSISTANT: Hello, how can I support you today?

USER: Can you please help me with booking a flight ticket from New York with price under 500?

ASSISTANT: Sure, I will help with booking.

USER: Thank you.

ASSISTANT: Please share me your source and destination airport code?

USER: Airport codes are LGA and HOU.

ASSISTANT: Please mention your planned journey dates?

USER: Planned travel dates are 04/06 and 04/08.

ASSISTANT: Do you want any halt in between your flight journey?

USER: I need a halt in between the journey.

ASSISTANT: Thank you for the details, sorry there is no flight available on given dates.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for visiting us, have a nice day ahead.