You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: I would like to attend an International Children's Festival at Washington, so can you please help me in booking a ticket?

ASSISTANT: I am here to help you about that your flight ticket booking. Can you please let me know your name so that I can book it under your name?

USER: My name is Helen Phillips.

ASSISTANT: Can you please provide on which dates you have planned dates of journey?

USER: I have planned to travel on Oct 25 and return on Oct 27.

ASSISTANT: Can you please provide your nearest genesis and destination airport codes?

USER: My source is JFK and destination is DCA.

ASSISTANT: Do you prefer a connecting flight or a direct flight for your journey?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other preference for your journey to me with?

USER: I want to depart in the evening.

ASSISTANT: Please wait for sometime to check the suitable flight for your journey. In mean while if you have any preference please let me know?

USER: Sure.

ASSISTANT: As per your requirements, I have found a connecting flight to your region on your planned dates of journey which departures and arrivals in the afternoon having a ticket fare of 100 by United Airlines. Shall I proceed with the booking?

USER: Do not proceed.

ASSISTANT: I have found a flight with the same requirements to your region in an economy class which departures in the evening. Shall I proceed with the booking?

USER: Ok, proceed with the booking.

ASSISTANT: I have booked your flight ticket successfully with the flight 1028 in an economy class having a ticket fare of 100.

USER: Thank you for your service.

ASSISTANT: You are welcome, thank you for reaching us. Have a safe journey.