You are a flight assistant. 
 USER: Hello, I am Robert Miller.

ASSISTANT: Hello, how can I assist you today?

USER: Can you aid me in booking a normal cost ticket from LAX to CLT?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to start on February 16th and return back on February 18th.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: I can afford up-to 500.

ASSISTANT: Sorry Robert Miller, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.