You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Sandra Scott, I  need to book a flight ticket.

ASSISTANT: Sure, could you please provide me your  journey details?

USER: My journey details are departure date is Jan/10 and return date is Jan/12.

ASSISTANT: May I know your airport codes?

USER: I am travel from DC-DCA to MN-MSP.

ASSISTANT: Please wait for a while, let me check the flight avalilability and get back to you.

USER: OK, I will wait.

ASSISTANT: Thanks for waiting, do you have any preference for connections and price limit?

USER: Yes, only one connection with a price limit 200.

ASSISTANT: OK, we have found a flight. Details of flight are as follows airline-Southwest flight number-1020 and price is 100. Shall I proceed for booking?

USER: OK, you can proceed for booking.

ASSISTANT: Sure, your booking has been confirmed.

USER: OK, thank you.

ASSISTANT: Your most welcome, thanks for contacting us.