You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Mitchell.

ASSISTANT: How may I help you out?

USER: I want to travel on these days that is on June 19 and return on June 21. Can you book a flight for me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling airport codes too?

USER: Thank you, my exact airport codes are from AUS to DEN.

ASSISTANT: Do you have any halts?

USER: Yes, I need a direct flight.

ASSISTANT: There is a flight with connection 0 and price 200, can I proceed?

USER: Yes, you can proceed with the ticket confirmation.

ASSISTANT: Ok, your ticket has been booked with flight number 1000.

USER: Thank you for spending your valuable time.

ASSISTANT: Thank you for reaching us.