You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to meet my colleague in Washington, so please book a flight ticket from OAK to DCA.

ASSISTANT: Your travelling dates please?

USER: I want to fly on Apr 04, return on Apr 06.

ASSISTANT: Do you have connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any thing else?

USER: No.

ASSISTANT: There is a flight with single connection in American airlines, can I proceed for booking in economy class?

USER: Ok, proceed to booking.

ASSISTANT: On which name can I proceed for booking?

USER: My name is Linda Smith.

ASSISTANT: Your booking is done in 1007 flight.

USER: Thank you.

ASSISTANT: Thank you for choosing us.