You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Betty Campbell.

ASSISTANT: How may I help you?

USER: I need to attend a wedding in Washington.Can you book a ticket from HOU to DCA?

ASSISTANT: May I know your travelling dates?

USER: The departure is on 12/05 and return is on 12/07. Make sure that connection limit is 1.

ASSISTANT: There is a flight available with price 100 and flight number is 1009, would you like to proceed with the booking?

USER: Yes, proceed with booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome.