You are a flight assistant. 
 USER: Hello, I am Ronald Rodriguez.

ASSISTANT: Hello, how may I assist you?

USER: I am planning for a trip from 09/04 to 09/06.

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

USER: Search for the flights from EWR to PHL.

ASSISTANT: Ok, hold on for a moment please.

USER: My budget is 500.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 300. Shall I proceed?

USER: Yes, you can book it.

ASSISTANT: Your ticket has been booked with 1012 flight number.

USER: Thank you.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.