You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: July, 28 and July, 30 are my travel dates.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I need direct flight.

ASSISTANT: Are there any other specifications for you?

USER: No, thank you.

ASSISTANT: May I know your good name?

USER: Ruth Adams.

ASSISTANT: We found a direct flight in Frontier airline with a fare of 200 which departs at 13:00 and return at 1:00. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1009.

USER: Thank you.

ASSISTANT: Thank you for choosing us.