You are a flight assistant. 
 USER: Hello. I am Barbara Carter.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from TX-AUS to reach CO-DEN?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are from Apr 21 to Apr 23.

ASSISTANT: How much can you afford for a ticket fare?

USER: I can afford up to 1000 for a ticket.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Southwest airlines. Shall I proceed with this?

USER: Sure, you can proceed for booking.

ASSISTANT: Your flight ticket has been reserved with 1000 number in an economy class.

USER: Thanks for your support.

ASSISTANT: Thank you for opting us.