You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you?

USER: Please book a ticket from Houston, TX-HOU to Washington DC-DCA for an auto show.

ASSISTANT: Sure. Your good name please?

USER: I am Eric Scott.

ASSISTANT: Can I have your journey dates?

USER: Departure date is 11/05 and will return by 11/07.

ASSISTANT: Which class would you prefer to travel?

USER: I would prefer to travel in economy class.

ASSISTANT: Thank you for sharing the details, there is a connecting flight available with fare 100 in Delta airline. Flight number is 1000 and it is of economy class.

USER: Thanks.

ASSISTANT: Shall I confirm this flight for your journey?

USER: Please book a flight.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.