You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me to book a ticket from AUS to DEN?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I want to start on Jan 18 and return on Jan 20.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Please provide your name.

USER: Samantha Wright here.

ASSISTANT: The Spirit Airlines providing an economy class flight with price 100 and the connections 0. Shall I confirm your ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket is booked. The flight number is 1018.

USER: Thank you.

ASSISTANT: Welcome, have a great day.