You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Benjamin Walker. I want to book a flight ticket within 500. Can you help me?

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

USER: 08/16 and 08/18 are my travelling dates.

ASSISTANT: May I know your airport codes please?

USER: DCA and MCO are my airport codes.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: UA airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: You can reserve it.

ASSISTANT: Your ticket is booked with the flight-1005.

USER: Thank you for your help in booking the flight ticket.

ASSISTANT: Thank you for reaching us.