You are a flight assistant. 
 USER: Hello, Patricia Collins here.

ASSISTANT: Hello Patricia, what can I do for you?

USER: Me and my friends want to visit Mount Rainier National Park which is a famous place in Washington, so could you please help me to book flight from PHL to DCA?

ASSISTANT: Sure, can you tell me when you want to take off?

USER: We are planning on 01/03. And we would like to return on 01/05.

ASSISTANT: Ok. when you want to come back? You: Flight number is 1005 with AA airlines. The connection limit is 1 and ticket fare is 100.

USER: Ok, please book this flight for me.

ASSISTANT: Sure. Your ticket is booked. Thank you to visit us.

USER: Thank you for booking.