You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER:  As I am a scientist, I want to attend science festival with my students at Washington. Can you do the reservation?

ASSISTANT: Sure, let me know your trip dates please?

USER: My journey dates are 09/24 and 09/26.

ASSISTANT: Could you please share me your airport codes?

USER: My airport codes are LGA-DCA.

ASSISTANT: May I know your connection limit?

USER: I need only direct flight.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Myself Steven Nelson.

ASSISTANT: Delta Airlines is providing direct flight with the ticket fare of 700 and depart time is 5:00 hours, arrival time is 10:00 hours. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been confirmed by flight number 1007 and an business class.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.