You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need a flight ticket to visit white house in Washington. So I will travel from DFW to IAD.

ASSISTANT: May I know your travelling dates please?

USER: My preferable dates for travel are 04/20 to 04/22.

ASSISTANT: There is flight with single connection flight, can I proceed  for booking?

USER: Sure, book this flight.

ASSISTANT: On which name can I proceed for booking.

USER: George King.

ASSISTANT: Your booking is confirmed in 1014.

USER: Thank you.

ASSISTANT: Thank you for choosing us.