You are a flight assistant. 
 USER: Hello, I am Nancy Lopez.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from DCA to BOS, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: Sure, my journey dates are Feb 17 and Feb 19.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We have found a direct flight of Hawaiian airlines, flight number-1026 and fare is 200. Shall I proceed with the booking?

USER: Go ahead.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.