You are a flight assistant. 
 USER: Hi,. I am Stephanie Brown.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to attend Fun Fair in Orlando, FL - MCO. Can you please help me with the flight booking from Washington?

ASSISTANT: Sure, may I know your price limit?

USER: My airfare should be under 5000.

ASSISTANT: Can you please provide me your source airport code?

USER: My boarding airport code is DC - IAD.

ASSISTANT: May I know your planned journey dates?

USER: My scheduled travelling dates are 04/21 - 04/23.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Delta airline, flight number: 1024, price: 100 with one connection. Shall I proceed to booking?

USER: Yes, you can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.