You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Anna Lee, I want to book a flight ticket from IAD to enjoy my holiday trip, can you help me with booking to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are May 29 to May 31.

ASSISTANT: Can you please share your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your depart time and return time?

USER: My return time is afternoon.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: We found an AA airline, flight number: 1009, return time: 17:00PM, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you, have a good day.