You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Brandon Parker here. I want to travel in a flight with fare of 500, so that I can afford with that fare. Please help me in booking a ticket.

ASSISTANT: Sure, may I know your airport codes?

USER: Source airport code is OAK and destination airport code is SEA.

ASSISTANT: Sure, on which dates you are planned to travel?

USER: The travelling dates are from 05/21 to 05/23.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Flight-1005 of Frontier airlines is travelling towards your destination.

USER: You can proceed booking my ticket.

ASSISTANT: Your ticket has been booked, have a nice journey.

USER: Thank you for your help.