You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Could you help me in booking a flight ticket from DFW to SFO?

ASSISTANT: Sure, may I know your trip dates?

USER: My departure day is Aug 25, return day is Aug 27.

ASSISTANT: Is there any connection limit?

USER: I want a flight with one connection.

ASSISTANT: May I know your name to proceed for booking?

USER: Richard Miller.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight of Southwest airlines in the economy class with fare 200, can I proceed for booking?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket is confirmed with flight number 1019.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.