You are a flight assistant. 
 USER: Hello, Ashley Allen here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking the ticket from DEN to LAX? As I'm planning to visit Los Angeles.

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My planned departure and return travel dates are 12/07 and 12/09.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Southwest airlines is having a flight on that route with travel charge of 600, shall I proceed for booking?

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: I have successfully booked your ticket with flight-1016, have a safe journey.

USER: Thank you so much for your help.

ASSISTANT: Thank you for choosing us.