You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I abet you at this moment?

USER: Please book a ticket from New York, NY-EWR to Washington DC-IAD, for science festival.

ASSISTANT: Sure. Do you prefer any halt in between your journey?

USER: Please provide a halt.

ASSISTANT: Can you please help me with your trip dates?

USER: My departure is on 04/28 and 04/30 is my return date.

ASSISTANT: There is a UA airline with flight 1016 having a halt with fare 200. Shall I proceed with booking?

USER: Please book a ticket. I am Robert Thomas.

ASSISTANT: Your ticket has been confirmed. Thank you for opting us.

USER: Thanks for ticket confirmation.