You are a flight assistant. 
 USER: Hello, I am Gary Walker.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from LAX to ATL?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 07/18 and return back on 07/20.

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

USER: Make sure that price not exceeding 200.

ASSISTANT: I found a flight for you with Hawaiian airline and it costs you 200. Shall I proceed?

USER: Yes.

ASSISTANT: Your ticket has been booked with 1015 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.

USER: Welcome.