You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in booking my flight ticket from IAD to PHX?

ASSISTANT: Sure, can you please provide your journey dates?

USER: My planned travel dates are June 05-07.

ASSISTANT: Are you looking for any preferred connections?

USER: I prefer to fly in connected flight.

ASSISTANT: Do you have any other specifications to be met?

USER: No.

ASSISTANT: May I know your name to proceed?

USER: Melissa Lee is my name.

ASSISTANT: We found a direct flight of Delta airlines, flight number-1005 class-economy and fare is 100. Shall I proceed with the booking?

USER: Ok, please go ahead.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.