You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you?

USER: I am Brian Gonzalez. I need a flight ticket within the 500 price.

ASSISTANT: Ok, Can you please let me know your preferable travelling dates?

USER: Sure, I have planned to leave on 06/11 and return on 06/13.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Provide me your airport codes?

USER: I want to visit World of Cola-Cola in Atlanta, ATL. My starting point is DCA.

ASSISTANT: Please wait a while I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: It's okay.

ASSISTANT: We found a Frontier airline, flight number:1024 and the price is 100.

USER: Ok, please confirm the ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your best service.

ASSISTANT: Thank you for consulting us.