You are a flight assistant. 
 USER: Hello. Brian Young here.

ASSISTANT: Hello Brian, how may I help you today?

USER: With my family, I am planning for Washington Tour. Can you book the flight tickets from DEN to IAD?

ASSISTANT: Sure, will you please provide me your travelling dates?

USER: My travelling dates are from 12/28 to 12/30.

ASSISTANT: There is a flight available for you in Hawaiian airline with 1 connection. Shall I proceed your booking with this airline?

USER: Yes, please go ahead with ticket booking.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1017.

USER: Thank you.

ASSISTANT: You are welcome.