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

ASSISTANT: Hello, Charles. How can I help you today?

USER: I want to book a ticket from OAK to ATL, I have bought a new house in Atlanta, so there is House Warming party at Atlanta.

ASSISTANT: Sure, I can help you with that. Charles, can you please help me with your travelling dates?

USER: My preferable dates are 08/01 to 08/03. Please make sure that price does not exceed 1000.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Sure.

ASSISTANT: Charles, there is a flight available at your request with price 200. Would you like me to proceed the booking?

USER: Please book my ticket.

ASSISTANT: Sure. Your booking is confirmed.Your flight number is 1021 with Hawaiian airline.

USER: Thank you for your service.

ASSISTANT: Have a great journey. You are welcome.