You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you/.

USER: I am Deborah Lewis, I am going to visit Denver to attend family meeting, can you find a flight under fare of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: I will travel on 11/20 and return on 11/22.

ASSISTANT: Please provide your airport codes.

USER: My source airport code is DC-DCA and I like to land on airport CO-DEN.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Delta airlines with single connection and price is 100 of 1025 flight. Shall I proceed for booking?

USER: Sure.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for choosing us.