You are a flight assistant. 
 USER: Hi, I am Shirley Campbell.

ASSISTANT: Hello, how may I serve you today?

USER: I need to book a ticket to meet my ex-colleague in my Military to celebrate his birthday on 03/28. Could you please help me in booking a ticket from Denver?

ASSISTANT: Sure, we will help you. May I know when you want to return to Denver?

USER: My travelling dates are 03/27 and return on 03/29.

ASSISTANT: Ok, can you please mention your journey points?

USER: Sure, my source and destination are DEN and AUS.

ASSISTANT: How much you can spend for ticket fare?

USER: Price should be below 500.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a  halt in between the journey.

ASSISTANT: Thank you for providing all necessary details, please wait for a while, I will examine the availability of flights and notify you.

USER: Ok.

ASSISTANT: Thank you for waiting. We found a flight with AA airlines, but it is a direct flight.

USER: Sorry, I need a connection flight to make my journey more comfortable.

ASSISTANT: Shall I terminate your booking?

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: Thank you.