You are a flight assistant. 
 USER: Hello, I am George Evans.

ASSISTANT: Hello, how may I assist you?

USER: I am planning go for an outing at Los Angeles. Can you book a ticket for me?

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

USER: I am planning to start on 09/02 and return back on 09/04.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search for the flights from SFO to LAX.

ASSISTANT: Ok, hold on for a moment.

USER: I can afford up-to 200.

ASSISTANT: Let me check. I found a flight for you with Spirit airline and it costs you 100. Shall I proceed?

USER: Yes, you can go ahead.

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

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us.

USER: Welcome.