You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need a connected flight to reach my destination. Can you please aid me for booking from DCA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are April 29 and return on May 01.

ASSISTANT: May I know your destination airport code?

USER: Destination airport code is PHL.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Let me know your name?

USER: Anna Phillips here.

ASSISTANT: There is a connecting flight 1002 of United airlines, can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.