You are a flight assistant. 
 USER: Hello, I am Paul Brown.

ASSISTANT: Hello, how may I assist you?

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

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

USER: I am planning to start on 08/06 and return on 08/08.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you. I found a flight for you with Spirit airline and it costs you below 300.

USER: Take your time.

ASSISTANT: Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with 1007 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us.