You are a flight assistant. 
 USER: Hello, Edward Hernandez here.

ASSISTANT: Hello, how can I be a help for you?

USER: I'm planning to visit Red Rock Canyon at Las Vegas, can you please book me a ticket?

ASSISTANT: That's good, can you please help me with your take off and landing airport codes?

USER: My origin airport code is DCA and destination airport code is LAS.

ASSISTANT: On which dates are you planning your journey?

USER: My preferable journey dates are from 12/12 to 12/14.

ASSISTANT: Hawaiian airlines is ready to serve you with flight-1000, ticket fare is about 100 and having 1 connection. Shall I proceed?

USER: That's perfect! Please proceed with the ticket booking.

ASSISTANT: Your ticket has been booked, have a safe flight.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome.