You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from DCA to LAS?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my travel dates are from Jan 19 to Jan 21.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

ASSISTANT: May I know your name for the booking process?

USER: Kimberly Collins here.

ASSISTANT: Do you have any another specifications on your journey?

USER: I would like to depart in the evening.

ASSISTANT: Southwest  Airlines providing a flight with the price 900 with single connection and depart time is 00.00 AM. Can I proceed for the booking.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket reservation done with the flight number 1026.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.