You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am David Turner. Can you please help me to book a flight ticket from MCO to LAS?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my trip dates are Aug 17 and Aug 19.

ASSISTANT: How much you can afford for airfare?

USER: I can afford 5000.

ASSISTANT: Southwest airlines is available in your route with the ticket fare of 300, shall I proceed with the booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked with the flight-1018.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.