You are a flight assistant. 
 USER: Hello, I am Helen Thomas.

ASSISTANT: Hello, how may I help you today?

USER: I have planned for the luncheons at MN-MSP on 08/23. Could you please help me with booking a flight ticket from DC-DCA?

ASSISTANT: Sure, can you please share your destination airport code?

USER: I have already mentioned.

ASSISTANT: May I know your return date please?

USER: I would like to return on 05/25.

ASSISTANT: Please wait for a while.

USER: I regret, I would like to return on 08/25. Sure.

ASSISTANT: We found a flight with Delta airlines, flight number is 1000 with one connection and price is 100.

USER: Yes, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.