You are a flight assistant. 
 USER: Hello. I am Lisa Parker.

ASSISTANT: Hello, how may I assist you?

USER: There is a family get together part at Chicago, so I have to attend the party in Oct month. Can you please help me with flight ticket booking from DCA to ORD location?

ASSISTANT: Sure, may I know your travelling dates?

USER: Thank you for considering my request and I would like to fly on Oct 22nd and return back on Oct 24th.

ASSISTANT: Do you have any class preference?

USER: I need an economy class flight.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found a flight on Delta airline, flight number 1018 with the fare of 200.

USER: Yes, please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your quick help in my flight ticket booking.

ASSISTANT: Thank you for availing us.