You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Gonzalez.

ASSISTANT: Michelle Gonzalez. How may I help you?

USER: I want to travel from AUS to DEN. Can you help me to book a flight ticket?

ASSISTANT: Sure, my please. Can you provide me with the travel dates?

USER: I want to fly in the flight on Sept 02 and Sept 04.

ASSISTANT: Give me a moment please.

USER: I am looking for a direct flight.

ASSISTANT: I regret to inform that, there are no direct flights on your desired dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for approaching us.