You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rebecca Brown.

ASSISTANT: How may I help you?

USER: I want to book a flight ticket within the fare limit 500 from Washington to visit Mill City Museum in Atlanta, can you help me to book an economy class ticket?

ASSISTANT: Sure, what are your travelling dates to book a ticket?

USER: I would like to start on Sept 5th and my return date will be on Sept 7th.

ASSISTANT: May I know your airfield location codes?

USER: My source and destination airport code are IAD and ATL.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: I have checked with your details, there is a flight 1011 in Frontier airlines which providing a flight for you with a 1 halt in your journey, can I confirm your flight ticket booking in economy class flight?

USER: Yes, you can proceed with the booking.

ASSISTANT: I have accepted your request and the ticket booking is done on your journey dates.

USER: Thank you for your help in booking.