You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Please book me a ticket from IAD to DCA to meet my family.

ASSISTANT: Sure, please provide your planned travel dates.

USER: I have planned to travel on Mar 09th and return on Mar 11th.

ASSISTANT: May I know your name please?

USER: Myself David John.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I want connecting flight.

ASSISTANT: May I know your airline preference?

USER: I prefer normal cost.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in Hawaiian airlines with fare 200 and it is a connecting flight. Can I book your ticket?

USER: Ok, please book this ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1009.

USER: Thank you.

ASSISTANT: Thank you for choosing us.