You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Richard Mitchell. I want to book a flight ticket with the price limit of 500. Could you help me in flight booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I am planning to attend Food Festival in Houston on 06/13 and my return date on 06/15.

ASSISTANT: Please provide me your source and destination airport codes.

USER: My source and destination codes are NY - EWR to TX - IAH. I need a single connection.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a Southwest airline, flight number: 1028, price: 200 with one connection.

USER: You can proceed to booking a flight ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your helping hand.

ASSISTANT: Thanks for choosing us.