You are a flight assistant. 
 USER: Hello. I am Brian Thomas.

ASSISTANT: Hello, how can I provide assistance for you?

USER: Please book me a ticket from DFW  to SEA to meet my friends.

ASSISTANT: Sure. May I know, when you are willing to depart?

USER: I have planned to travel on 10/16.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: Would you prefer either business class or economy class?

USER: I prefer economy class.

ASSISTANT: Help me with your return date of journey.

USER: I want to return on 10/18.

ASSISTANT: Thank you for being patience. There is a flight available with Hawaiian airline, flight number 1010 with fare 100 and a lay by. Shall I proceed to book with economy class?

USER: Ok, please book this ticket.

ASSISTANT: Your reservation has been successfully processed.

USER: Thank you.

ASSISTANT: Thank you for availing us.